Whirlybird Series

Nasturtium

35d to harvest

A whirl of color at the garden’s edge—Whirlybird Series nasturtium blooms with vivid, ruffled-edged flowers that seem to spin in the light. The petals are tender and peppery, with a bright, lively bite, while the foliage stays succulent and crisp for a long season. Grow it for abundant edible flowers that shine in fresh displays and bring a playful, garden-fresh flair to salads, garnishes, and vibrant herb-forward mixes.

Crop Dates

Growing note: In frost-free Zone 11a, grow this cool-season crop during the cooler dry season (October–February).

Milestone	Date
Start Indoors	—
Climate	Frost-Free Climate
Transplant / Sow Outdoors	Oct 1st
Harvest Begins	Nov 5th
Harvest Ends	Feb 28th

Crop Details

Trait	Value
Days to Maturity	35
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	40
Min Night Temp (°F)	32
Harden Off (days)	Not Required

Frequently Asked Questions

What pest or disease most commonly affects Tropaeolum majus (Whirlybird Series), and how can I manage it at home?

A frequent problem is aphids, which cluster on tender new growth and can cause leaves to curl or become sticky. Rinse plants with a strong stream of water, then spray insecticidal soap (or a neem-based product labeled for aphids) in the early morning and repeat every 5–7 days until you see no new aphid growth. Watch for mildew-like spotting in humid weather and improve airflow by spacing plants and avoiding overhead watering.

How often should I water Tropaeolum majus during its main growth to keep it thriving in full sun?

Water when the top 1 inch of soil feels dry, typically about 1–2 times per week depending on heat; aim for evenly moist soil, not soggy. During the weeks leading up to flowering, keep moisture consistent—irregular dry spells followed by heavy watering can reduce flower quality. Water at the soil line, since wet foliage increases the chance of fungal spotting on nasturtiums.

How do I know when Whirlybird Series Tropaeolum majus is ready to harvest?

Harvest “flowers” (and tender leaves, if you want) as soon as buds open; the first blooms generally arrive around 35 days after sowing. For best flavor, pick flowers in the cool part of the day and choose fully opened blooms with crisp petals. If you want seeds, leave some pods to ripen on the plant until they turn darker and feel firm, then harvest before they naturally dry and scatter.