What to Plant in August — Zone 5

August sits inside zone 5's frost-free season (Apr 22 – Oct 12) — everything on this page can go straight into warm soil.

Fall planting — Counted back from the first fall frost.

🫛 Peas Aug 3 – Aug 17 55–70 days to maturity
🥬 Lettuce Aug 17 – Sep 14 45–60 days to maturity
🍃 Spinach Aug 17 – Aug 31 40–50 days to maturity
🥬 Kale Jul 20 – Aug 3 55–65 days to maturity
🌿 Arugula Aug 31 – Sep 14 30–40 days to maturity
🌈 Swiss Chard Aug 3 – Aug 17 50–60 days to maturity
🍃 Collard Greens Jul 20 – Aug 3 60–75 days to maturity
🥬 Kohlrabi Aug 3 – Aug 17 45–60 days to maturity
🥕 Carrots Jul 20 – Aug 3 60–75 days to maturity
🫒 Beets Aug 3 – Aug 17 50–65 days to maturity
🌶️ Radishes Aug 31 – Sep 14 22–30 days to maturity
🥔 Turnips Aug 3 – Aug 17 40–55 days to maturity
🧅 Scallions Aug 17 – Aug 31 60–70 days to maturity
🧄 Garlic Aug 31 – Sep 28 plant cloves; harvest next summer
🥬 Bok Choy Aug 17 – Aug 31 45–55 days to maturity
🌿 Mustard Greens Aug 17 – Aug 31 35–45 days to maturity
🫘 Green Beans (Bush) Aug 3 – Aug 17 50–60 days to maturity
🌿 Cilantro Aug 17 – Aug 31 45–55 days to maturity
🌾 Dill Aug 17 – Aug 31 40–55 days to maturity

Windows use zone 5's typical frost dates (Apr 22 / Oct 12). For your own city's dates, run the frost lookup — the planting calendar then localizes everything automatically.

Frequently asked questions

What can I plant outside in August in zone 5?

19 crops can go in the ground: peas, lettuce, spinach, kale, arugula, swiss chard, collard greens, kohlrabi, and 11 more. Exact windows are in the tables above — early and late in the month can differ by a full frost date.

Is August the right time for tomatoes in zone 5?

The spring window has passed; tomatoes set out this late won't beat the Oct 12 average first frost to ripeness. Plan for next spring's seed-starting instead.