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Nasturtium Seeds, Black Velvet
Description
(Tropaeolum minus). A dazzling dark cocoa color makes this a dramatic element for the garden or dinner plate. Plants stand 12 inches tall and about as wide, an ideal size for containers as well as beds and borders. The piquant petals and foliage are edible.Â
- Annual
- 50-60 days to maturity
- 6-8 hours of full to partial sun
- Sprouts in 7-14 days
- Seed Depth: 1/2-1"
- Plant Spacing: 8-12"
- Ideal Temperature: 60-80 F
- Frost Hardy: No
Growing Tips, Tricks and FAQs
Growing Tips
The Black Velvet nasturtium grows best in full sun but can also tolerate partial shade, especially in hot climates. They prefer poor to moderately fertile, well-draining soil. Avoid overwatering or fertilizing, as that can encourage foliage growth over flowers.
When to Grow
Direct sow seeds outdoors in the spring after frost danger has passed and soil temperatures are above 55 F. Start indoors 4 weeks before the last frost date for earlier blooms. In mild climates, sow in the fall for winter blooms. Check your local region’s frost dates to plan the best planting time. If you’re unsure of your last frost date, consult our blog post ‘Our Experts Answer Questions, Share Resources.’
How to Sow and Plant
Direct sow seeds 1/2-1 inch deep and space them 8–12 inches apart. Soak seeds in warm water before planting to speed up germination, which takes about 7–14 days. If starting indoors, plant in biodegradable pots to prevent transplant shock. Choose a sunny spot with well-draining soil for maximum flowering.
How to Grow
Nasturtiums are low-maintenance. Water sparingly, allowing the soil to dry slightly between watering. Avoid fertilizing, as nutrient-rich soil reduces blooming. Mulch to conserve moisture and deadhead spent flowers for continuous blooms. While pest-resistant, nasturtiums may attract aphids, which can be managed with water sprays or neem oil. They can also act as a trap crop to protect nearby plants.
How to Save
- Nasturtiums will often reseed, but to save seeds, allow them to mature and fall to the ground.
- Collect them and store them in a cool, dark, dry place over the winter.
FAQ
Are Black Velvet nasturtiums edible?
Yes, both the flowers and leaves are edible with a peppery, slightly spicy flavor. They can be used in salads, sandwiches, or as garnishes.
Can Black Velvet nasturtiums grow in containers?
Yes, this variety grows very well in containers. Use a pot with good drainage and avoid overwatering.
How tall and wide do Black Velvet nasturtiums grow?
This variety typically grows to a height of 12–18 inches and spreads about 12–24 inches, making it suitable for ground cover, borders, or containers.
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