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Growing Pennyroyal in Johannesburg

🇿🇦 Zone 7 Planting Guide · Subtropical highland climate

USDA Zone 7 290 frost-free days 60-90 days to harvest

Quick Answer: Growing Pennyroyal in Johannesburg

Yes, you can grow Pennyroyal in Johannesburg, ZA! Plant during Apr, May, Jun, Jul, Aug for best results. Johannesburg is in USDA Zone 7 with a Subtropical highland climate, offering 290 frost-free days per year. The difficulty level is medium, and Pennyroyal takes 60-90 days to harvest. Pennyroyal needs full sun to partial shade and regular watering.

Climate Match Analysis

Good Match Johannesburg + Pennyroyal

Johannesburg's temperatures (4°C to 26°C) are within the tolerable range for Pennyroyal (-10°C to 28°C), though not always in the optimal zone (12°C to 22°C). Plant during recommended months for best results.

Pennyroyal tolerates -10°C to 28°C
Optimal: 12°C - 22°C
Johannesburg range 4°C to 26°C

Johannesburg Climate Data

USDA Zone
7
Frost-Free
290days
Winter Low
4°C
Summer High
26°C
Rainfall
713mm/yr
Climate
Cwb
Subtropical highland

Pennyroyal Planting Calendar for Johannesburg

Green months show the best time to plant Pennyroyal in Johannesburg

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

Pennyroyal Growing Requirements

☀️

Sunlight

Full Sun to Partial Shade

2-4 hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

60-90

From planting to first harvest

📊

Difficulty

medium

Some experience helpful

💡 Growing Tips for Pennyroyal

Repels fleas and mosquitoes. Ground cover between pavers. 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: Pennyroyal is frost tolerant — you can plant earlier in spring.

How to Grow Pennyroyal in Johannesburg

Johannesburg, ZA is in USDA Hardiness Zone 7 with a Subtropical highland climate (Köppen Cwb). With winter lows of 4°C and summer highs of 26°C, the growing season spans approximately 290 frost-free days. Pennyroyal grows well with some gardening knowledge in this climate.

Pennyroyal thrives in temperatures between 12°C and 22°C, requiring full sun to partial shade and regular watering. In Johannesburg, the best months to plant Pennyroyal are April, May, June, July, August. Since Pennyroyal can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 60-90 days after planting.

With 713mm of annual rainfall, Johannesburg provides moderate natural moisture. You'll likely need to supplement with regular watering, especially during the growing season.

Other Plants That Grow in Johannesburg

More plants you can grow alongside Pennyroyal in Johannesburg

Keep Exploring

Frequently Asked Questions

Can I grow pennyroyal in Johannesburg?

Yes! Pennyroyal can be successfully grown in Johannesburg, ZA. Johannesburg is in USDA Hardiness Zone 7 with a Subtropical highland climate. The difficulty level for growing Pennyroyal here is rated "medium". The best months to plant are April, May, June, July, August.

When should I plant pennyroyal in Johannesburg?

In Johannesburg, the recommended planting months for Pennyroyal are April, May, June, July, August. Johannesburg has 290 frost-free days per year, with winter lows of 4°C and summer highs of 26°C. Pennyroyal is frost tolerant, giving you more flexibility with planting dates.

How long does pennyroyal take to grow in Johannesburg?

Pennyroyal typically takes 60-90 days from planting to harvest. In Johannesburg's Subtropical highland climate with 290 frost-free days, you have plenty of time to grow Pennyroyal to maturity. Repels fleas and mosquitoes. Ground cover between pavers. 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 pennyroyal indoors in Johannesburg?

Pennyroyal can potentially be grown indoors in Johannesburg with proper conditions. It requires full sun to partial shade (2-4 hours of indirect light). Indoor growing extends your season beyond the Apr, May, Jun, Jul, Aug outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant pennyroyal in Johannesburg?

Plant Pennyroyal in Johannesburg during April, May, June, July, August. These are the optimal months based on Johannesburg's USDA Zone 7 climate, 290 frost-free days, and temperature range of 4°C to 26°C.

Is pennyroyal hard to grow in Johannesburg?

Pennyroyal is rated "medium" to grow in Johannesburg. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Pennyroyal in Johannesburg is Good.

What grows well with pennyroyal in Johannesburg?

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

Does pennyroyal need full sun in Johannesburg?

Pennyroyal requires full sun to partial shade. Pennyroyal tolerates lower light. In Johannesburg, a spot with filtered or indirect light for 2-4 hours works well.

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

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