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Nasturtium Growing Guide
Tropaeolaceae family
Days to Harvest45 days
SunlightFull Sun
Frost ToleranceNone
Spacing4/sqft (6" apart)
Germination7-14 days
HardinessTender
Germ. Temp70°F
Start Indoors4 weeks before last frost
Companion Planting
Growth Stages
- Seedling
- Vegetative Growth
- Flowering
- Fruiting / Harvest Ready
Planting Dates by Zone
| Zone | Start Indoors | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| Zone 1a | Apr 27 | Jun 1 | Jun 1 | Jul 11 |
| Zone 1b | Apr 27 | Jun 1 | Jun 1 | Jul 11 |
| Zone 2a | Apr 17 | May 22 | May 22 | Jul 1 |
| Zone 2b | Apr 27 | Jun 1 | Jun 1 | Jul 11 |
| Zone 3a | Apr 24 | May 29 | May 29 | Jul 8 |
| Zone 3b | Apr 17 | May 22 | May 22 | Jul 1 |
| Zone 4a | Apr 7 | May 12 | May 12 | Jun 21 |
| Zone 4b | Apr 3 | May 8 | May 8 | Jun 17 |
| Zone 5a | Mar 31 | May 5 | May 5 | Jun 14 |
| Zone 5b | Mar 31 | May 5 | May 5 | Jun 14 |
| Zone 6a | Mar 31 | May 5 | May 5 | Jun 14 |
| Zone 6b | Mar 18 | Apr 22 | Apr 22 | Jun 1 |
| Zone 7a | Mar 18 | Apr 22 | Apr 22 | Jun 1 |
| Zone 7b | Mar 13 | Apr 17 | Apr 17 | May 27 |
| Zone 8a | Mar 8 | Apr 12 | Apr 12 | May 22 |
| Zone 8b | Feb 22 | Mar 29 | Mar 29 | May 8 |
| Zone 9a | Feb 20 | Mar 27 | Mar 27 | May 6 |
| Zone 9b | Feb 10 | Mar 17 | Mar 17 | Apr 26 |
| Zone 10a | Jan 23 | Feb 27 | Feb 27 | Apr 8 |
| Zone 10b | Dec 31 | Feb 4 | Feb 4 | Mar 16 |
| Zone 11a | Dec 31 | Feb 4 | Feb 4 | Mar 16 |
| Zone 11b | Dec 18 | Jan 22 | Jan 22 | Mar 3 |
| Zone 12a | Dec 4 | Jan 8 | Jan 8 | Feb 17 |
| Zone 12b | Dec 4 | Jan 8 | Jan 8 | Feb 17 |
| Zone 13a | Dec 4 | Jan 8 | Jan 8 | Feb 17 |
| Zone 13b | Dec 4 | Jan 8 | Jan 8 | Feb 17 |
Frequently Asked Questions
How long does it take to grow Nasturtium?
Nasturtium takes approximately 45 days from planting to harvest.
How much sun does Nasturtium need?
Nasturtium requires full sun (6+ hours direct sunlight per day).
How far apart should I plant Nasturtium?
Plant Nasturtium at 4/sqft (6" apart) using square foot gardening spacing.
Can Nasturtium survive frost?
Nasturtium is frost-sensitive and should not be exposed to frost.
What are good companion plants for Nasturtium?
Good companion plants for Nasturtium include Cucumbers, Squash, Pumpkins, Radishes, Cabbage.
How long does Nasturtium take to germinate?
Nasturtium seeds germinate in 7-14 days at an optimal temperature of 70°F.
When should I start Nasturtium seeds indoors?
Start Nasturtium seeds indoors 4 weeks before your last frost date, then transplant 1 week after last frost.
Plan Your Nasturtium Garden
Track Nasturtium from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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