Gardening in Kokomo, IN
Every ZIP code in this metro is USDA zone 6a. That is unusual — most metros span several zones — and it means the one number people usually look up is the same wherever you are here.
Your freeze dates
One NOAA station serves this metro, so these are its published medians rather than a range.
Your growing season
NOAA publishes a growing-season length for each station, and across the 1 station serving Kokomo, IN it runs 174 days . That figure is published, not computed from the two freeze dates — subtracting one from the other gives the wrong answer wherever a season crosses New Year. Mean summer high (June–August) runs 82 °F , below the 90 °F point where cool-season crops reliably bolt.
When to start seeds in Kokomo, IN
Every spring job for 63 crop dates, counted from this metro's own last spring freeze. Each is a range across all 1 stations — the earliest and latest that job falls anywhere in the metro — because no one station speaks for the whole area.
| Crop | Job | When | Offset |
|---|---|---|---|
| Green Onions | Start indoors | March 2 | 8 weeks before |
| Peppers | Start indoors | March 2 | 8 weeks before |
| Broccoli | Start indoors | March 16 | 6 weeks before |
| Cabbage | Start indoors | March 16 | 6 weeks before |
| Collards | Start indoors | March 16 | 6 weeks before |
| Kale | Start indoors | March 16 | 6 weeks before |
| Leaf Lettuce | Start indoors | March 16 | 6 weeks before |
| Peas | Direct sow | March 16 | 6 weeks before |
| Spinach | Direct sow | March 16 | 6 weeks before |
| Sweet Potato | Start indoors | March 16 | 6 weeks before |
| Tomatoes | Start indoors | March 16 | 6 weeks before |
| Bok Choy | Start indoors | March 23 | 5 weeks before |
| Kohlrabi | Start indoors | March 23 | 5 weeks before |
| Swiss Chard | Start indoors | March 23 | 5 weeks before |
| Arugula | Direct sow | March 30 | 4 weeks before |
| Baby Salad Greens | Direct sow | March 30 | 4 weeks before |
| Beets | Direct sow | March 30 | 4 weeks before |
| Green Onions | Direct sow | March 30 | 4 weeks before |
| Mustard Greens | Direct sow | March 30 | 4 weeks before |
| Okra | Start indoors | March 30 | 4 weeks before |
| Radishes | Direct sow | March 30 | 4 weeks before |
| Turnips | Direct sow | March 30 | 4 weeks before |
| Cabbage | Set out | April 6 | 3 weeks before |
| Carrots | Direct sow | April 6 | 3 weeks before |
| Collards | Direct sow | April 6 | 3 weeks before |
| Collards | Set out | April 6 | 3 weeks before |
| Cucumbers | Start indoors | April 6 | 3 weeks before |
| Green Onions | Set out | April 6 | 3 weeks before |
| Kale | Direct sow | April 6 | 3 weeks before |
| Kale | Set out | April 6 | 3 weeks before |
| Kohlrabi | Direct sow | April 6 | 3 weeks before |
| Kohlrabi | Set out | April 6 | 3 weeks before |
| Leaf Lettuce | Direct sow | April 6 | 3 weeks before |
| Pumpkins | Start indoors | April 6 | 3 weeks before |
| Summer Squash | Start indoors | April 6 | 3 weeks before |
| Winter Squash | Start indoors | April 6 | 3 weeks before |
| Zucchini | Start indoors | April 6 | 3 weeks before |
| Bok Choy | Direct sow | April 13 | 2 weeks before |
| Bok Choy | Set out | April 13 | 2 weeks before |
| Broccoli | Set out | April 13 | 2 weeks before |
| Cilantro | Direct sow | April 13 | 2 weeks before |
| Leaf Lettuce | Set out | April 13 | 2 weeks before |
| Swiss Chard | Direct sow | April 13 | 2 weeks before |
| Swiss Chard | Set out | April 13 | 2 weeks before |
| Dill | Direct sow | April 20 | 1 week before |
| Bush Beans | Direct sow | May 4 | 1 week after |
| Cucumbers | Set out | May 4 | 1 week after |
| Pumpkins | Direct sow | May 4 | 1 week after |
| Pumpkins | Set out | May 4 | 1 week after |
| Summer Squash | Direct sow | May 4 | 1 week after |
| Summer Squash | Set out | May 4 | 1 week after |
| Sweet Corn | Direct sow | May 4 | 1 week after |
| Tomatoes | Set out | May 4 | 1 week after |
| Winter Squash | Direct sow | May 4 | 1 week after |
| Winter Squash | Set out | May 4 | 1 week after |
| Zucchini | Direct sow | May 4 | 1 week after |
| Zucchini | Set out | May 4 | 1 week after |
| Cucumbers | Direct sow | May 11 | 2 weeks after |
| Okra | Direct sow | May 11 | 2 weeks after |
| Okra | Set out | May 11 | 2 weeks after |
| Peppers | Set out | May 11 | 2 weeks after |
| Southern Peas | Direct sow | May 11 | 2 weeks after |
| Sweet Potato | Set out | May 11 | 2 weeks after |
The week offsets are conventional extension guidance and vary by variety; the freeze dates they are counted from are measured. For a single date rather than a range, run when do I start my seeds? with your own ZIP code.
What lives through a zone 6a winter
Winter hardiness runs on the zone alone, so this one is exact for the whole of Kokomo, IN rather than a range. Of 74 perennial fruits, nuts, berries, vegetables and herbs, 51 come through a zone 6a winter — the other 23 fail, and not all of them for cold.
Among them: Cranberry, Honeyberry, Lingonberry, Apple, Aronia, Black Currant, Elderberry, Gooseberry. See the full list with reasons.
The 1 station behind these numbers
Every figure above comes from these, and each is named so you can check it. Distances vary by ZIP code, so the tools report yours rather than this page guessing.
| Station | NOAA ID | Last spring freeze | First fall freeze | Season |
|---|---|---|---|---|
| Kokomo 3 Wsw, IN | USC00124662 | April 27 | October 18 | 174 days |
These are medians, not averages — NOAA publishes freeze dates as a probability distribution, and half of years freeze later than the date shown.
Work out your own dates
Each of these takes a ZIP code and answers for that ZIP alone, citing the station it used and how far away it is. There is a ZIP box in the header of every page.
- What survives my winter?
Runs on the hardiness zone, so it answers for all of Kokomo, IN at once — zone 6a across 74 perennial fruits, berries, vegetables and herbs.
- When do I start my seeds?
Dates every spring job from your own last freeze — sow indoors, set out, direct sow.
- When do I sow the next round?
How often each crop is worth re-sowing, and when the next sowing is due.
- What can I still plant?
Counts the growing days left before your first fall freeze, crop by crop.
Where these numbers come from
The hardiness zone is the USDA 2023 Plant Hardiness Zone Map, published per ZIP code by PRISM at Oregon State. The freeze dates are NOAA's 1991–2020 Climate Normals, read from every station whose normals cover a ZIP code in this metro. Nothing here is estimated, and no station stands in for another.
This page names no single station on purpose. Picking one to represent a metro sounds reasonable and is not: the station serving the most ZIP codes is an artifact of where ZIP centroids happen to fall, and it selects a lock on the Monongahela for Pittsburgh and a far southern suburb for Chicago. A range across every station is true; a single cited date for a whole metro is not.