Mustard Growing Guide
Growing Mustard is easier than you think. This guide walks you through everything you need — from planting your first seed to harvesting.
At a Glance
Difficulty
Easy
Category
Herb
Sun Exposure
Full Sun, Partial Sun
Frost Tolerance
Frost Hardy
Growing Zones
Zones 2, 3, 4, 5, 6, 7, 8, 9
Plant Family
Brassicaceae
Growing Season
Cool Season
Plant Lifecycle
Annual
Also grows well as
When To Start
First Chance to Plant
30 Days Before Last Frost
Last Chance to Plant
30 Days Before First Frost
When should you plant Mustard?
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Your Mustard Planting Window
Start planting
May 15, 2026
Last chance
Sep 10, 2026
The Journey Ahead
Mustard's Lifecycle
Seedling
Mature Plant
Seed Production
Step 2
Planting & Sprouting
Expect sprouts in 3–5 days
Growing Tips
- 1Plant mustard in a spot that gets full sun for the best growth.
- 2Water regularly to keep the soil consistently moist but not waterlogged.
- 3Use well-draining soil rich in organic matter, and space plants about 6 inches apart to allow for good air circulation.
- 4To manage pests, consider using row covers or natural insect repellents like neem oil.
Seedling Phase
Step 3
Growth & Maturity
~30
Days to Maturity
150 cm
Mature Height
45 cm
Mature Width
Pests to Watch For
Diseases to Watch For
Mature Plant
Step 4
Harvesting
Harvest Window
30 days
When to Pick
Harvest leaves or seeds before bolting
How to Harvest
- 1Harvest mustard greens when the leaves are young and tender, typically when they are about 3-4 inches long.
- 2Use scissors or a sharp knife to cut the outer leaves about an inch above the base, leaving the inner leaves to continue growing.
- 3Avoid pulling the entire plant to ensure continuous growth and multiple harvests.
Step 5
Saving Seeds
How to Save Seeds
Saving seeds from your mustard plant is easy and rewarding! Once your mustard plants have finished flowering, let the seed pods dry on the plant until they turn brown and brittle. Gently cut the pods and place them in a paper bag, then shake or crush them to release the seeds. Remove any plant debris, and let the seeds air dry for a few days. Store your clean, dry seeds in a labeled envelope or jar in a cool, dry place—this way, you’ll have your very own homegrown seeds ready for next season. You’ve got this—saving seeds is a simple step toward a more sustainable and self-sufficient garden!
Seed Production
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