Zone 10 · Herbs Growing Guide

When to Plant Lemongrass
in Zone 10

A tropical grass that doubles as a dramatic ornamental clump. Harvest stalks for curries, soups, and teas. In warm zones it's a large perennial — in cold zones, grow in a pot and bring indoors in winter.

Plant outdoors
Year-round
Start indoors
Direct sow
Last Frost
~Jan 15
Days to harvest
90–120 days
Difficulty
Easy
Ready to harvest — Zone 10
Harvest window: Year-round

Planting Calendar

In Zone 10, Lemongrass should be planted outdoors Year-round, after the average last frost date of approximately Jan 15.

Evergreen perennial. Clumps grow 4–6 feet tall. Harvest outer stalks continuously.

Care Guide

Sunlight
Full sun · 6–8 hrs/day
Watering
Moderate
Spacing
24–36 inches
Soil
Well-draining, fertile, moisture-retentive
Days to maturity
90–120 days
Soil pH
5.5–7.0
plant tip · Zone 10

Evergreen perennial. Clumps grow 4–6 feet tall. Harvest outer stalks continuously.

Feeding Schedule

How often
monthly
Feed type
high nitrogen
Key timing
throughout growing season

Tropical grass that loves nitrogen. Feed monthly during the growing season. Reduce feeding in autumn.

Companion Planting for Lemongrass

What you plant next to lemongrass makes a real difference — some plants actively help, others compete or attract pests.

Grows well with
  • Basil
  • Mint
  • Tomatoes
  • Peppers
Keep away from
  • Fennel

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Common questions

In Zone 10, direct sow lemongrass outdoors Year-round after your last frost date of approximately Jan 15. Evergreen perennial. Clumps grow 4–6 feet tall. Harvest outer stalks continuously.
Zone 10 has an average last spring frost of approximately Jan 15 and a first fall frost around Dec 31. These dates vary by specific location — use your ZIP code in the plant app for precision based on the nearest NOAA weather station.
Good companion crops for lemongrass include Basil, Mint, Tomatoes, Peppers. Avoid planting near Fennel, which can compete for nutrients or attract pests.
Lemongrass typically takes 90–120 days from transplant or direct sow to harvest in Zone 10. Expected harvest window: Year-round.

Free app · iOS February 2028

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Lemongrass in other zones
Crop Guides