Moonlight Nasturtium

Family: Tropaeolaceae Flower / Herb

Moonlight Nasturtium spills over the garden with a cool, luminous presence—delicate blossoms in pale, creamy tones that feel like moonlight caught on the vine.

The tender leaves and succulent, peppery seed pods bring a crisp, juicy bite with a gentle heat, ideal for bright garnishes and quick pickling. Grow it for a long season of trailing color and a harvest that’s as lively in flavor as it is in form.

Light: Full SunMaturity: 50 DaysHabit: Vine

Botanical illustration of Moonlight Nasturtium

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 25th
Harvest Begins	Jun 14th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	50
Sun Requirements	Full Sun
Growth Habit	Vine
Support Needed	Trellis
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	55
Min Night Temp (°F)	40
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Moonlight nasturtium gives you that classic peppery nasturtium zing, but with a cooler, more floral lift from the pale blossoms. Use it late—blossoms and leaves lose their crispness fast under heat, while the seed pods pickle into tight, crunchy bursts.

Best Uses

scatter blossoms over salads and citrusy crudo for an instant pepper-spark
quick-pickle the immature seed pods for snappy “capers”
toss tender leaves into mixed greens right before serving (no long cooking)
use as a cool, edible garnish on sandwiches and omelets for fresh heat

Flavor Profile

citrus-bright peppery bite crisp, juicy snap gentle heat that blooms then fades succulent, lightly floral aroma

Kitchen Pairings

lemon olive oil white vinegar radishes goat cheese grilled fish

Frequently Asked Questions

What’s the most common disease pest issue for Tropaeolum majus (moonlight nasturtium), and how can I prevent it?

Nasturtiums are frequently affected by aphids and sometimes bacterial leaf spot under warm, humid conditions. Spray plants with a strong jet of water to knock off aphids, then use insecticidal soap if they persist, and remove badly spotted leaves to keep airflow high. Water at the soil line (not on foliage) to reduce disease spread, and avoid crowding so leaves dry quickly after rain or irrigation.

How often should I water Tropaeolum majus during the main growing phase?

During active flowering and growth (roughly weeks after seedlings establish), keep the soil evenly moist but not soggy—water when the top 1 inch of soil feels dry. In hot weather, this may be about 1–2 times per week depending on your soil, while in cooler periods you’ll likely water less. Avoid frequent light watering; nasturtiums do best with deeper soakings followed by drying of the top layer.

How can I tell when moonlight nasturtium (Tropaeolum majus) is ready to harvest?

Harvest is typically ready around 50 days from sowing when plants have abundant open flowers and the foliage is lush and healthy. For flowers, pick blooms as soon as they open fully—regular harvesting encourages more flowering. If you’re harvesting seeds, wait until seed pods turn greenish-brown and rattle slightly when dry, then collect them before they fully scatter.