When should I plant Thì là in Zone 1a?

Direct sow Thì là outdoors around 11 Th5. Expect first harvest around 20 Th6.

What is the last frost date for Zone 1a?

The average last spring frost date for Zone 1a is 25 Th5. The first fall frost averages 28 Th8, giving a 95-day growing season.

Can I grow Thì là in Zone 1a?

Yes. Thì là needs 40 days to harvest. Zone 1a has a 95-day growing season, which is sufficient. You can plant up to 2 successions.

Growing Thì là in Zone 1a

Zone 1a has harsh winters and a short growing season. Start Thì là early indoors to maximize your harvest window. Sương giá cuối: 25 Th5. Sương giá đầu: 28 Th8.

Planting Calendar

Outdoor

Harvest

11 Th528 Th8

Season: 25 Th5 – 28 Th8 (95 ngày) · Succession: plant every 3 weeks (up to 2x)

Vùng1a

Sương giá cuối25 Th5

Sương giá đầu28 Th8

Mùa vụ95 ngày

Thu hoạch40 ngày

Ánh sángNắng hoàn toàn

When to Plant Thì là in Zone 1a

Sow Seeds Outdoors: 11 Th5

Direct sow Thì là seeds outdoors around 11 Th5. Wait until soil temperature reaches 50F. Space plants at 4/m² (15cm khoảng cách).

Harvest: 20 Th6

First harvest approximately 20 Th6 (~40 ngày from planting). Continue harvesting until first frost (28 Th8).

Fall Planting: 17 Th7

For a fall harvest, plant Thì là around 17 Th7 (6 weeks before first frost).

Cây trồng đồng hành

✅ Bắp cải ✅ Rau diếp✅ Hành tây✅ Ngô✅ Dưa chuột

❌ Cà rốt

Thì là in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Plan Your Garden Thì là

Track Thì là from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Thì là Growing Guide