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🥬 Vegetable easy

Growing Radish in Perth

🇦🇺 Zone 9 Planting Guide · Hot-summer Mediterranean climate

USDA Zone 9 340 frost-free days 22-30 days to harvest

Quick Answer: Growing Radish in Perth

Yes, you can grow Radish in Perth, AU! Plant during Apr, May, Jun, Jul for best results. Perth is in USDA Zone 9 with a Hot-summer Mediterranean climate, offering 340 frost-free days per year. The difficulty level is easy, and Radish takes 22-30 days to harvest. Radish needs full sun and regular watering.

Climate Match Analysis

Moderate Match Perth + Radish

Perth's climate requires careful timing. Summer highs (31°C) exceed Radish's maximum (24°C), so plant early or provide shade. Follow the recommended planting months for success.

Radish tolerates 2°C to 24°C
Optimal: 10°C - 18°C
Perth range 8°C to 31°C

Perth Climate Data

USDA Zone
9
Frost-Free
340days
Winter Low
8°C
Summer High
31°C
Rainfall
733mm/yr
Climate
Csa
Hot-summer Mediterranean

Radish Planting Calendar for Perth

Green months show the best time to plant Radish in Perth

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

Radish Growing Requirements

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Sunlight

Full Sun

6+ hours direct sunlight

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Water

Regular

Consistent moisture, 1-2 inches/week

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Days to Harvest

22-30

From planting to first harvest

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Difficulty

easy

Great for beginners

💡 Growing Tips for Radish

Sow directly. Don't let soil dry out or roots will be pithy. 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: Radish is frost tolerant — you can plant earlier in spring.

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Companion Plants for Radish

Find out which plants grow best alongside Radish — and which to keep apart

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Grow Radish Indoors

No garden? Learn how to grow Radish indoors with our complete guide

How to Grow Radish in Perth

Perth, AU is in USDA Hardiness Zone 9 with a Hot-summer Mediterranean climate (Köppen Csa). With winter lows of 8°C and summer highs of 31°C, the growing season spans approximately 340 frost-free days. Radish is one of the easiest plants to grow in this climate.

Radish thrives in temperatures between 10°C and 18°C, requiring full sun and regular watering. In Perth, the best months to plant Radish are April, May, June, July. Since Radish can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 22-30 days after planting.

With 733mm of annual rainfall, Perth provides moderate natural moisture. You'll likely need to supplement with regular watering, especially during the growing season.

Other Plants That Grow in Perth

More plants you can grow alongside Radish in Perth

Keep Exploring

Frequently Asked Questions

Can I grow radish in Perth?

Yes! Radish can be successfully grown in Perth, AU. Perth is in USDA Hardiness Zone 9 with a Hot-summer Mediterranean climate. The difficulty level for growing Radish here is rated "easy". The best months to plant are April, May, June, July.

When should I plant radish in Perth?

In Perth, the recommended planting months for Radish are April, May, June, July. Perth has 340 frost-free days per year, with winter lows of 8°C and summer highs of 31°C. Radish is frost tolerant, giving you more flexibility with planting dates.

How long does radish take to grow in Perth?

Radish typically takes 22-30 days from planting to harvest. In Perth's Hot-summer Mediterranean climate with 340 frost-free days, you have plenty of time to grow Radish to maturity. Sow directly. Don't let soil dry out or roots will be pithy. 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 radish indoors in Perth?

Radish can potentially be grown indoors in Perth 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 Apr, May, Jun, Jul outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant radish in Perth?

Plant Radish in Perth during April, May, June, July. These are the optimal months based on Perth's USDA Zone 9 climate, 340 frost-free days, and temperature range of 8°C to 31°C.

Is radish hard to grow in Perth?

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

What grows well with radish in Perth?

In Perth, you can grow many companion plants alongside Radish. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Perth's Zone 9 climate.

Does radish need full sun in Perth?

Radish requires full sun. In Perth, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.

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

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