When should I plant Oregano in Zone 4a?

Start Oregano seeds indoors around Mar 10. Transplant outdoors after Apr 28. Expect first harvest around Jun 17.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is May 5. The first fall frost averages Oct 1, giving a 149-day growing season.

Can I grow Oregano in Zone 4a?

Yes. Oregano needs 80 days to harvest. Zone 4a has a 149-day growing season, which is sufficient.

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🌿 Growing Oregano in Zone 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for Oregano in this zone. Siste frost: May 5. Første frost: Oct 1.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 10Oct 1

Season: May 5 – Oct 1 (149 dager)

Sone4a

Siste frostMay 5

Første frostOct 1

Sesong149 dager

Høst80 dager

SolFull Sol

When to Plant Oregano in Zone 4a

Start Seeds Indoors: Mar 10

Start Oregano seeds indoors around Mar 10 (8 uker før siste frost). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: Apr 28

Transplant Oregano seedlings outdoors after Apr 28. Wait until soil temperature reaches 50F. Space plants at 4/m² (15cm avstand). Harden off plants for a week before moving outside.

Harvest: Jun 17

First harvest approximately Jun 17 (~50 dager from transplant). Continue harvesting until first frost (Oct 1). Oregano can overwinter in mild climates for continued harvest.

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Oregano 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

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