What to plant in September in zone 6
USDA zone 6 has winter lows of -10 to 0°F, a typical last spring frost around Apr 15 and first fall frost around Oct 15, roughly 185 frost-free days. September is the "fall garden season" there.
8 crops have a sowing or planting window this month, including chervil, mustard greens, spinach, tatsoi, turnip, arugula - and 8 of those windows close during September.
Dates come from the typical frost dates of USDA zone 6 (last frost Apr 15, first frost Oct 15). A zone covers many climates, so for dates tuned to your town use the planting calendar, or pick your state below.
Zone 6: planting activity through the year
Last chance in September
Chervil (sow for a fall crop, by Sep 3) · Mustard Greens (sow for a fall crop, by Sep 3) · Spinach (sow for a fall crop, by Sep 3) · Tatsoi (sow for a fall crop, by Sep 3) · Turnip (sow for a fall crop, by Sep 3) · Arugula (sow for a fall crop, by Sep 10) · Watercress (sow for a fall crop, by Sep 10) · Radish (sow for a fall crop, by Sep 17)
For fall and winter harvests (8)
Sowings counted back from zone 6's first fall frost, so the crop matures before the cold - or, for garlic and similar, planted after it.
| Crop | What to do | Window | This month |
|---|---|---|---|
| Chervil | Sow for a fall crop | Aug 17 – Sep 3 | Last chance - ends Sep 3 |
| Mustard Greens | Sow for a fall crop | Aug 17 – Sep 3 | Last chance - ends Sep 3 |
| Spinach | Sow for a fall crop | Aug 17 – Sep 3 | Last chance - ends Sep 3 |
| Tatsoi | Sow for a fall crop | Aug 17 – Sep 3 | Last chance - ends Sep 3 |
| Turnip | Sow for a fall crop | Aug 17 – Sep 3 | Last chance - ends Sep 3 |
| Arugula | Sow for a fall crop | Aug 24 – Sep 10 | Last chance - ends Sep 10 |
| Watercress | Sow for a fall crop | Aug 24 – Sep 10 | Last chance - ends Sep 10 |
| Radish | Sow for a fall crop | Aug 31 – Sep 17 | Last chance - ends Sep 17 |
Harvesting in September
First harvests expected this month from crops sown or planted on time earlier in the season.
Fall garden season: September garden jobs in zone 6
- The average first frost is October 15, about 4 weeks away. Pick tender crops (tomatoes, peppers, squash, beans) before it, or cover them on cold nights.
- Still time to sow or plant: chervil, mustard greens, spinach, tatsoi, turnip, arugula. Fast greens and radishes are the safest bets this late.
- Row cover buys 4-6°F of frost protection and weeks of extra harvest - see season extension.
- Pull finished crops and sow a cover crop (cereal rye or crimson clover) into empty beds before the soil gets cold.
Questions gardeners ask
What can I plant in zone 6 in September?
8 crops have a window in September: chervil, mustard greens, spinach, tatsoi, turnip, arugula, watercress, radish. The tables above give the exact dates for each.
When are the last and first frost in zone 6?
The typical last spring frost is around Apr 15 and the first fall frost around Oct 15. These are broad zone averages, so your own town can be a week or two either side: look yours up by ZIP code in the planting calendar.
What can I harvest in zone 6 in September?
From plantings made on time: celery, luffa (loofah gourd), peanut, sweet potato, zucchini / summer squash, chayote, cucumber, broccoli, cauliflower, cabbage.
September in states with land in zone 6
Zone 6 in other months
What to plant in September in other zones
Dates are computed from the zone’s typical frost dates and each crop’s timing in our crop database. Your garden may be a week or two either side.