Peppers are interesting in Kansas City because our summer is almost perfect for them, but our spring is not. They need warm soil and warm nights to do anything, and we have about six weeks every year where the days tease you into thinking it’s time, but the overnight lows haven’t caught up. The result is a lot of people transplanting peppers in late April, watching them sit motionless for a month, and assuming something is wrong. Nothing is wrong. The plant is just cold.
Soil temperature is the number that matters. Peppers want 65°F minimum at root depth before they do much of anything. At 60°F they survive. Below that they stall, sometimes permanently. We crossed that threshold reliably about ten days ago in KC. Mid-May transplants will catch up to plants that went in three weeks earlier in most years, and they’ll do it faster because they’re going into warm soil instead of cold.
See the full Vegetable Guide for pepper variety details and spacing.
For sweet peppers, California Wonder is the standard for a reason but it’s not the most interesting option. Banana peppers are incredibly productive in our heat. Shishito peppers are worth growing if you’ve never had them roasted. Carmen is a sweet Italian frying pepper that produces heavily and handles our August heat better than most.
For hot peppers, KC summers are legitimately good. Jalapeños are reliable and prolific. Cayenne does great. If you want to go further up the heat scale, habaneros and Hungarian wax both perform well here. The heat actually improves the closer we get to August, so don’t harvest everything early.
One note on hot pepper varieties: the plants get big. A mature habanero can reach three feet wide. Give them the space.
Transplant a pepper in May and it will sit there for three to four weeks doing what looks like nothing. This is normal. The plant is establishing roots, not putting on top growth. Resist the urge to fertilize heavily to push it. Too much nitrogen early on produces big leafy plants that set almost no fruit. Go light on nitrogen and let the plant develop at its own pace. Once it starts flowering, back off nitrogen entirely. Phosphorus and potassium from this point on.
The first flush of flowers often drops without setting fruit. This is also normal, especially if nights are still cool or if there’s been a lot of rain. The second flush typically sets. Don’t pull the plant because the first flowers fell.
Peppers handle our summer heat well but they need consistent moisture. Irregular watering — especially the wet-dry-wet cycle you get from relying only on rain — causes blossom end rot and cracked fruit. Mulch heavily around the base of the plant to retain soil moisture and moderate temperature. Two inches of straw or wood chips makes a real difference in July and August.
One thing that catches people off guard: peppers can drop flowers when temps consistently hit 95°F or above. We get stretches of that in late July. The plants don’t die, they just pause. When the heat backs off into the upper 80s, flowering resumes. It’s frustrating to watch but there’s not much you can do about it besides keep the soil evenly moist and wait.
Almost every pepper variety can be eaten at the green stage or left to ripen to its final color — which is usually red, orange, or yellow depending on the variety. Fully ripe peppers are sweeter and have more vitamin content. They also take another three to four weeks after the green stage to get there. Leaving fruit on the plant to ripen slows production of new fruit. The tradeoff is yours to make.
If you want maximum production, pick peppers at the green stage and keep picking. If you want maximum flavor, let a few ripen fully and accept that the plant slows down while they do.
We’ve got about four solid months of pepper weather ahead. Get them in this week if you haven’t already.
]]>This happens in Kansas City. It’s the kind of swing that damages or kills plants that went in the ground based on how Monday felt rather than what the calendar and forecast actually showed.
Thirty-three degrees is a light frost, right at the threshold. What it kills depends on what you had in the ground and how exposed it was. Tomatoes, peppers, eggplant, cucumbers, squash, basil, and sweet potatoes have no cold tolerance. At 33°F on a clear still night, any of these left uncovered will show damage: wilting, blackened stem tissue near soil level, bleached or water-soaked patches on leaves that turn brown as the day warms. If the growing tip — the apical bud — was hit, the plant’s primary growth axis is compromised. It may recover from side shoots, but you’ve lost time.
If you had transplants out that weren’t covered, walk your beds today and look at the growing tips first. A plant with damaged leaves but a healthy growing tip will recover. A plant with a mushy blackened growing tip in Zone 6a on May 6th is worth pulling and replacing now rather than nursing for three weeks.
Cool-season crops — peas, spinach, kale, lettuce, broccoli, chard — were completely fine. Thirty-three degrees is nothing to them.
Warm days in early May are a recurring trap. The soil feels right, the air feels right, the nursery centers are stocked with tomato and pepper starts, and the urge to plant is completely rational. The problem is that a single warm day does not make a pattern. In Kansas City the last reliable frost date is April 15, meaning there’s still real frost risk through early May most years, and confirmed risk at least through the first week of May based on what happened this past weekend.
The forecast from here looks reasonable. Highs in the upper 50s and low 70s through the rest of the week, overnight lows holding in the mid-40s or better. That’s improving. The ground rule for warm-season transplants in the 913: watch three consecutive overnight lows above 50°F before you stop worrying about cold damage. We’re not there yet, but we’re close.
If you planted before the May 2nd frost and your plants look okay, count yourself lucky and keep an eye on tonight’s overnight low. If anything looks suspicious — wilting that doesn’t resolve by midday, off-color growing tips, mushy tissue near the soil — don’t wait. Pull and replace. A fresh transplant put in on May 10th in warm soil will catch up to a frost-damaged plant faster than you’d expect.
If you were planning to plant this week and held off, good call. Wait until Thursday or Friday when the forecast firms up into the 60s and 70s with no precipitation. The soil is going to be wet today and tomorrow from the rain, and planting into waterlogged KC clay causes root problems. Let it drain.
Keep row cover accessible through mid-May. A single layer adds 4 to 6 degrees of frost protection and takes two minutes to deploy. Having it on hand costs nothing compared to losing a flat of transplants.
Kansas City gets this sequence almost every May. Warm push from the south, late cold snap, recovery. The heat fools everything into thinking summer is here. Then a Canadian front drops down, the temperature falls 30 degrees in 24 hours, and the plants you put out on Saturday are the ones paying for it Tuesday morning.
Plant with the forecast, not the thermometer. Check the NWS Kansas City 7-day before you put anything tender in the ground, and keep row cover within reach until at least May 15th. After that the odds shift heavily in your favor.
The warm days are coming and they’re going to stay. We’re just not all the way there yet.
]]>For a stretch of this spring I couldn’t do much outside. Physical stuff — the kind that runs in families, works its way up on you slowly, and then one day makes bending over a raised bed feel like a bad idea. I won’t get into the specifics. Anyone who’s dealt with chronic pain, or watched someone they love deal with it, knows that you don’t need the details to understand what it means to have your body tell you no.
What I want to talk about is what it felt like to step back outside when that finally started to change.
The beds didn’t hold for me. Weeds moved in. Some of the overwintered garlic got ahead of itself. A few things I should have cut back in March were still sitting there doing their own thing. The garden kept going without me, which is mostly what gardens do. They don’t need your presence to exist, just your attention when you can give it.
Coming back wasn’t overwhelming. It was grounding. There’s something about putting your hands in soil that resets something in you and I don’t know how else to say it. It’s not mystical. It’s just tactile and real and immediate in a way that most of daily life isn’t. The dirt is cold. The earthworms are working. The garlic smells like garlic. You’re outside, and your body is doing a thing it was built to do.
That first afternoon back out there, I didn’t accomplish much. Pulled a few weeds. Walked the beds slowly. Looked at what had made it and what hadn’t. Felt the sun on my face in a way that I hadn’t been paying attention to for a while.
It was enough.
I’m not a doctor and this isn’t that kind of advice. But I’ll say what I wish someone had said to me more directly a few years ago: take the thing seriously before it gets serious. The discomfort you’re used to working around is information. Your body is not a problem to push through indefinitely. Get the appointment. Ask the question. Don’t wait until the garden has gone three weeks without you to decide you should have done something sooner.
You can’t dig beds you can’t bend over. You can’t split firewood with a back that won’t let you lift. You can’t do much of anything you love if you’ve run out the maintenance on yourself. Take care of the machine.
One of the things that happens when you’re laid up for a stretch is you find out who’s around. A neighbor offered to water my containers when I mentioned offhand that I was moving slowly. A friend dropped off food without being asked. These are not dramatic gestures. They’re just the basic texture of community that gets invisible when everything is fine and becomes suddenly visible when it isn’t.
If you have neighbors who garden, check in on them. Not just to talk plants — to actually ask how they’re doing. Offer to haul a bag of mulch if someone’s struggling. Lend tools. Trade transplants. Bring vegetables over when you have too many, which in July in Kansas City, everyone does.
The whole premise of a kitchen garden is growing more than you strictly need and sharing what you have. That’s already halfway to being a decent neighbor. Lean into it.
I don’t have a tidy way to close this. Spring in Kansas City is a specific kind of beautiful — loud and green and storm-prone and full of things that shouldn’t work but do. The redbuds already came and went. The irises are doing their thing. The tomatoes are in nurseries waiting to be planted by people who may or may not have checked the frost forecast.
It’s May. The season is right here, right now, doing what it does with or without any of us. If you can be out in it, be out in it. If someone in your life can’t be right now, check in on them.
That’s it. Next week we’ll talk about peppers.
]]>This isn’t a reason to give up. It’s a reason to build smarter.
Hail is the most unpredictable weather threat to a Kansas City garden. It comes fast, it comes without much warning, and it doesn’t discriminate. Golf-ball hail on May 15th can defoliate a plant that took six weeks to grow from seed. Marble-size hail — which happens several times a season — will bruise fruit, damage leaf tissue, and create entry points for bacterial and fungal disease even if it doesn’t kill the plant outright.
Row cover draped over hoops can blunt the impact of smaller hail events and is worth having on hand through June. For established tomatoes and peppers with cages, the cage itself provides some protection since the caging material diffuses impact. For fruit trees in bloom, there’s not much you can do except choose hail-resistant varieties and accept that some years will be light producers.
After any hail event, walk your garden within 24 hours. Bruised tissue is vulnerable to fungal infection — Botrytis particularly — in the wet conditions that follow storms. Remove obviously damaged leaves and fruit. If the plant has enough undamaged foliage to continue photosynthesizing, it will usually recover. If more than 50% of the leaf area is gone, the plant’s ability to produce is compromised for the rest of the season.
Kansas City gets intense rain. We regularly see 2 to 4 inches of rainfall in a single storm event and our clay soil doesn’t absorb it fast. The result is surface flooding that can last 12 to 48 hours after a major storm — long enough to suffocate roots and invite root rot, especially in tomatoes and peppers.
Raised beds help, but only up to a point. A 6-inch raised bed in a low spot will still flood. Bed placement matters more than bed height. Before you build or position beds, observe where the water flows during and after a heavy rain. Low spots, fence lines that channel runoff, and areas adjacent to downspouts are all flood-prone. Site your beds where water drains away from them after a storm, not toward them.
If you’re working with an existing flood-prone area and can’t relocate beds, there are plants that handle wet feet much better than standard vegetable crops. Swamp milkweed, blue flag iris, cardinal flower, and Joe-Pye weed are all native plants that not only tolerate periodic flooding but thrive with it. Turning a problem drainage area into a native planting zone removes the annual frustration of watching crops drown.
KC storm events are often accompanied by straight-line winds in the 50 to 70 mph range — not tornadic, but enough to level tall plants and snap stakes. Corn and sunflowers are the most vulnerable. Tomato cages made from lightweight wire bend or topple. Anything on a trellis depends entirely on how well that trellis is anchored.
Standard garden-store stakes are not adequate for trellises and tall structures. Use 6-foot T-posts or 1-inch conduit driven at least 18 inches into undisturbed soil. If you’re building a trellis for pole beans or cucumbers, it should feel immovable when you grab it and try to shake it. If it wobbles, it will fail in a storm.
After any wind event above 40 mph, check your tall plants. Corn that has been rootlodged — tipped over but not broken — can sometimes be staked back upright within 24 hours and will right itself. Broken stalks don’t recover.
The mistake is treating storm prep as something you do once in spring. Check the weather forecast Sunday evening for the week ahead and do a 10-minute walk of your garden before any storm system is due. Stake anything that’s gotten tall since you last looked. Bring in any containers that could blow over. Have row cover accessible rather than buried in a shed.
It’s not paranoia. It’s calibrating your attention to the environment you’re actually growing in. A 30-minute intervention before a storm beats three hours of damage assessment after one.
The goal isn’t a garden that never takes damage. It’s a garden designed for the conditions that exist here, maintained by someone who’s paying attention.
]]>And yet the gardeners who work with it long enough often say the same thing: clay, amended correctly, is actually excellent growing medium. It holds nutrients and moisture in ways that sandy soils can’t touch. The problem isn’t the clay itself. It’s fighting it instead of working with it.
For a broader overview of KC soil conditions, see the Soil Guide.
Most of Kansas City sits on deep deposits of glacial-origin clay mixed with Kansan loess, fine windblown silt that compacted into the heavy dense profile we deal with today. This soil is high in minerals and has strong cation exchange capacity — meaning it holds onto nutrients rather than letting them leach out. Its problem is structure, not nutrition. Water can’t move through it quickly, roots struggle to penetrate it, and compaction from foot traffic or heavy equipment creates layers that roots can’t cross.
The fix isn’t to replace the soil. That’s expensive and mostly temporary. The fix is to build its structure over time.
The single most effective thing you can do for KC clay is consistent long-term addition of organic matter: compost, aged manure, leaf mold, wood chips. Organic matter improves clay structure by binding to clay particles and creating aggregates with air pockets between them. The result, over two to three seasons, is noticeably improved drainage, better root penetration, and reduced surface crusting.
The quantity that matters is more than most people apply. A half-inch of compost worked into the top 8 inches of a bed before planting is a good start but not transformative. A two-inch layer incorporated deeply, repeated every fall, is what actually changes the soil profile. If you’re sheet mulching or no-tilling, a three to four inch top-dressing of compost or wood chips left to break down over winter is worth more than most amendments you can buy.
What doesn’t work: sand added to clay without massive quantities of organic matter simultaneously tends to make concrete, not loam. Adding a thin layer of topsoil on top of heavy clay just gives you two distinct layers that roots still can’t cross. Only till when the soil is just barely damp enough to crumble — never when it’s sticky or gummy. Rototilling wet clay destroys structure.
For vegetable gardening specifically, raised beds filled with a quality growing mix are the fastest way to sidestep clay in the short term while you improve the ground beneath them over time. A standard mix of 60% topsoil, 30% compost, and 10% coarse perlite or expanded shale gives you a workable starting point. Some gardeners use a modified version of Mel Bartholomew’s mix (1/3 compost, 1/3 vermiculite, 1/3 peat or coir) which is excellent but expensive to fill a large bed.
Don’t fully seal the bottom of the bed. Landscape fabric on the bottom traps water and prevents beneficial soil organisms and earthworms from moving between the bed and the native soil. Use cardboard or layers of newspaper if you need to suppress grass initially. Both will break down within a season and allow integration.
If you want to know how your soil improvement is going, count your earthworms. Dig a shovel-width hole 12 inches deep in the amended section of your garden and count what you find. In healthy improved clay you should see 10 or more worms per cubic foot of soil. In unimproved compacted clay you might see zero.
Earthworms process organic matter into plant-available nutrients, create channels that improve drainage and root penetration, and their castings are some of the most biologically active material you can have in soil. They thrive in cool, moist, organically rich conditions and leave when soil is compacted, dry, or chemically treated. Building earthworm populations is a proxy for building soil health.
Before each growing season, push a wire flag or heavy-gauge wire into the soil. If you can push it 6 inches without much resistance, your soil is in decent shape. If it stops at 3 inches or less, you have a compaction problem that’s going to limit root depth and water infiltration.
Prevention is better than remediation. Keep foot traffic off beds with permanent paths. Once you establish where people walk, mulch it heavily with wood chips, gravel, or stepping stones and keep it there. Never walk on beds when the soil is wet. If you’re using a broadfork or garden fork to aerate, do it when the soil is slightly moist — not bone dry and not saturated.
There is no shortcut that turns Kansas City clay into rich open workable soil in a single season. The soil you’ll have in five years — if you’re consistent with organic matter addition, cover cropping in the off-season, and avoiding compaction — will be dramatically different from what you started with. Better drainage. Faster warming in spring. Roots that reach deeper. More microbial activity.
Work with the clay, not against it. It took thousands of years to get that rich mineral profile into the ground under your feet. A few years of good practice will make it one of the best gardens in the neighborhood.
]]>That’s how people hit buried gas lines. In Kansas City, utilities run shallower than you’d expect, and the consequences of striking a line aren’t a minor inconvenience. They are a medical emergency.
811 is the national “Call Before You Dig” number. It’s a free service, it’s required by Kansas and Missouri law before any ground disturbance, and it’s easier than most people think. You call (or go to kansas811.com) at least three business days before you plan to dig. A crew comes out and marks buried gas, electric, water, and telecom lines with paint or flags. Then you know where it’s safe to go deep.
This applies to more garden projects than most people realize: raised bed corner posts, fence posts, pergola footings, irrigation trenches, French drains, decorative boulders you’re setting with a post hole, tree planting. If you’re going more than a few inches and using any kind of mechanical force — a spade, an auger, a trencher — call first.
The flags stay for a few weeks. Work around them. When they fade, you know the approximate path of your buried infrastructure and can plan future projects accordingly.
The other mistake that costs people a full season is skipping the layout phase. Two hours of planning in April beats two months of fixing in June.
Start with sun. Walk your yard at 9 AM, noon, and 4 PM on a clear day and actually observe where the shadows fall. Kansas City’s afternoon sun comes from the southwest and is intense from June through August. Your tall structures — trellises, corn, sunflowers, pole beans — go on the north side of beds so they don’t shade out shorter crops.
Then think in terms of permanence. Perennials like asparagus, rhubarb, herbs, berry bushes, and fruit trees go where they won’t block future beds and won’t need to be moved. Annuals rotate. Plan your permanent plantings first, then fill in the annual space around them.
Most gardeners put raised beds where there’s a flat open space. The better question is where does the water go. Kansas City gets hard summer storms — 2 to 4 inches of rain in an afternoon is not unusual. If your beds sit in a low spot or against a fence line that channels water, you’ll flood them out in July. Position beds where water drains away from them, or build with enough height (12 inches minimum) that surface flooding isn’t an issue.
Also think about access. A 4-foot wide bed is the standard advice because most people can reach the center from either side. That math changes if your bed is against a fence or wall. Twenty-four to 30 inches is more realistic when you can only approach from one direction.
Call 811. Wait the required three business days. Walk your yard with the flags and note where your constraints are. Sketch your layout on paper (or use the 913KC Garden Planner). Mark off permanent plantings first. Then position raised beds, paths, and trellises around them. Then dig.
It adds a week to the start of your project. It also means you don’t spend that week in an emergency room or tearing out a raised bed that turned out to be sitting on a gas main.
The soil isn’t going anywhere. Take the time to do it right.
]]>Picking the wrong tree is worse than picking no tree. A bad species choice will spend 20 years being a problem you’re managing instead of a resource you’re enjoying.
Zone 6a means cold winters, down to -10°F on a hard year. But the thing that kills more trees in Kansas City than cold is summer: sustained heat, drought stress in July and August, and then the storm cycle that follows. We regularly see 60-plus mph straight-line winds. We get golf-ball hail. We get ice storms that can add hundreds of pounds of weight to a canopy overnight.
Add our clay. Heavy clay holds water during wet springs, which creates root rot risk, then bakes into near-concrete by August, which creates drought stress. Trees that don’t tolerate wet feet or summer dry periods fail here in ways that confuse gardeners who follow national planting guides.
The bur oak (Quercus macrocarpa) is the answer to almost every “what shade tree should I plant” question in KC. It’s native to the region, deeply drought-tolerant once established, handles our clay, tolerates ice and wind, grows faster than most people expect for a native oak (about a foot per year in good conditions), and lives for centuries. If you have the space — it wants 40 to 60 feet of clearance at maturity — plant a bur oak.
Chinkapin oak and shingle oak are solid native alternatives for tighter spaces. Bald cypress is surprisingly good in KC, tolerates flooding and drought both, gets stunning fall color, no pest pressure worth mentioning. For smaller yards, American hornbeam is underused and excellent: a mid-understory native that tops out around 25 feet.
What to avoid: Bradford pear is invasive in Kansas, cross-pollinates with native pears, and has notoriously weak branch structure that splits in ice storms. Don’t plant it, and consider removing any you have. Silver maple grows fast for a reason — the wood is weak. It’s a short-term tree that creates long-term problems. Avoid planting it near structures or power lines.
KC is actually good fruit-tree territory. The cold is enough to satisfy chill hour requirements and the heat is enough to ripen fruit. The challenges are late freezes and disease pressure.
Peaches do well here. They need a sunny south-facing site and protection from late frosts, but a healthy peach in KC can produce abundantly. Contender and Reliance are the most reliably cold-hardy varieties. Apples need two different varieties for cross-pollination. Enterprise, Liberty, and Pristine are disease-resistant options that reduce your spray load. Tart cherries (Montmorency) are more reliable than sweet cherries in our climate since sweet cherries prefer colder winters than we reliably deliver. Asian pears handle our conditions better than European pears and come in with fewer disease problems.
See the full Fruit Trees guide for variety details and spacing.
The old advice was to dig a wide deep hole and fill it with amended soil. Research has reversed that. A tree planted in a pocket of amended soil in heavy clay will circle its roots in the good soil and fail to establish. The better approach: dig wide but not deep — two to three times the width of the root ball and only as deep as needed so the root flare sits at or just above grade. Use the native soil to backfill, with a modest amount of compost mixed in (no more than 20%). Water deeply and slowly, not frequently.
Mulch is your biggest ally: three to four inches of wood chip mulch in a ring extending as far from the trunk as you can manage, pulled back from the bark itself. Mulch moderates soil temperature, retains moisture, and slowly builds organic matter in the clay. A newly planted tree in KC clay with good mulch coverage will outperform the same tree planted in amended soil without mulch, almost every time.
For more on improving KC clay, see Fixing KC Clay.
The number one killer of new trees in Kansas City is the first summer. The tree hasn’t had time to establish a root system outside its original root ball, and July and August will dehydrate it faster than you’d expect. Deep watering once or twice a week — slow, at the drip line, for a long time — is worth more than any fertilizer or amendment. Don’t push growth in year one. Just keep it alive and let the roots find their footing.
In year two, you largely leave it alone. By year three, you start to see what you actually have.
Plant it this spring. You’ll be grateful for the shade by 2030.
]]>I kept a folder of bookmarks that I’d work through each March. A frost date calculator here, a seed-starting chart there, a pest identification site that hadn’t been updated since 2011. None of it talked to each other. None of it was here.
913KC Garden is a free planting almanac built specifically for the 913 area code, Kansas City, Kansas, Zone 6a. Everything on this site is calibrated to our actual last frost (April 15), our actual first frost (October 15), our 183-day growing season, and our specific version of Missouri clay.
Here’s what’s here right now: a Planting Calendar with month-by-month tasks, a Vegetable Guide, an Herb Guide, a Pest Guide, a Soil Guide focused on our clay, Native Plants, Berries, Fruit Trees, a Garden Planner, and more. Free accounts unlock a permanent Seed Vault and Garden Journal.
This is a living site. More articles are already written and will publish weekly. An invasive species guide is in the works, along with expanded companion planting data and eventually a local food culture section. If you spot something wrong or have better local data, reach out. I’d genuinely rather have it right.
It’s March 21st. Peas and spinach are already in the ground here. If yours aren’t yet, now’s the time. Welcome to the 913.
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