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Growing Green Onion in Tucson

🇺🇸 Zone 7 Planting Guide · Hot desert climate

USDA Zone 7 310 frost-free days 20-30 days to harvest

Quick Answer: Growing Green Onion in Tucson

Yes, you can grow Green Onion in Tucson, US! Plant during Oct, Nov for best results. Tucson is in USDA Zone 7 with a Hot desert climate, offering 310 frost-free days per year. The difficulty level is easy, and Green Onion takes 20-30 days to harvest. Green Onion needs full sun and regular watering.

Climate Match Analysis

Moderate Match Tucson + Green Onion

Tucson's climate requires careful timing. Summer highs (38°C) exceed Green Onion's maximum (28°C), so plant early or provide shade. Follow the recommended planting months for success.

Green Onion tolerates -2°C to 28°C
Optimal: 10°C - 22°C
Tucson range 4°C to 38°C

Tucson Climate Data

USDA Zone
7
Frost-Free
310days
Winter Low
4°C
Summer High
38°C
Rainfall
294mm/yr
Climate
BWh
Hot desert

Green Onion Planting Calendar for Tucson

Green months show the best time to plant Green Onion in Tucson

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Plant Green Onion Not recommended

Green Onion Growing Requirements

☀️

Sunlight

Full Sun

6+ hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

20-30

From planting to first harvest

📊

Difficulty

easy

Great for beginners

💡 Growing Tips for Green Onion

Can regrow from store-bought roots in water. Succession plant every 2 weeks. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Frost tolerance: Green Onion is frost tolerant — you can plant earlier in spring.

How to Grow Green Onion in Tucson

Tucson, US is in USDA Hardiness Zone 7 with a Hot desert climate (Köppen BWh). With winter lows of 4°C and summer highs of 38°C, the growing season spans approximately 310 frost-free days. Green Onion is one of the easiest plants to grow in this climate.

Green Onion thrives in temperatures between 10°C and 22°C, requiring full sun and regular watering. In Tucson, the best months to plant Green Onion are October, November. Since Green Onion can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 20-30 days after planting.

Tucson receives only 294mm of annual rainfall, so consistent irrigation will be essential for growing Green Onion successfully.

Other Plants That Grow in Tucson

More plants you can grow alongside Green Onion in Tucson

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Frequently Asked Questions

Can I grow green onion in Tucson?

Yes! Green Onion can be successfully grown in Tucson, US. Tucson is in USDA Hardiness Zone 7 with a Hot desert climate. The difficulty level for growing Green Onion here is rated "easy". The best months to plant are October, November.

When should I plant green onion in Tucson?

In Tucson, the recommended planting months for Green Onion are October, November. Tucson has 310 frost-free days per year, with winter lows of 4°C and summer highs of 38°C. Green Onion is frost tolerant, giving you more flexibility with planting dates.

How long does green onion take to grow in Tucson?

Green Onion typically takes 20-30 days from planting to harvest. In Tucson's Hot desert climate with 310 frost-free days, you have plenty of time to grow Green Onion to maturity. Can regrow from store-bought roots in water. Succession plant every 2 weeks. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Can I grow green onion indoors in Tucson?

Green Onion can potentially be grown indoors in Tucson with proper conditions. It requires full sun (6+ hours of direct light — a south-facing window or grow lights recommended). Indoor growing extends your season beyond the Oct, Nov outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant green onion in Tucson?

Plant Green Onion in Tucson during October, November. These are the optimal months based on Tucson's USDA Zone 7 climate, 310 frost-free days, and temperature range of 4°C to 38°C.

Is green onion hard to grow in Tucson?

Green Onion is rated "easy" to grow in Tucson. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Green Onion in Tucson is Moderate.

What grows well with green onion in Tucson?

In Tucson, you can grow many companion plants alongside Green Onion. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Tucson's Zone 7 climate.

Does green onion need full sun in Tucson?

Green Onion requires full sun. In Tucson, provide at least 6 hours of direct sunlight daily. During peak summer heat, some afternoon shade can help prevent heat stress.

Last updated: March 2026 · Climate data from NOAA, FAO, USDA

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