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Nasturtium Seeds, Tip Top Mahogany
Description
(Tropaeolum minus). Opulent blooms in a rich mahogany hue will elevate any ordinary kitchen garden to an epicure’s Eden. These compact 8-to 10-inch plants hold their striking blooms above their foliage, making for an extra lush and colorful display. Add this sophisticated element to window boxes, hanging baskets, beds, and borders. Don’t forget, these blooms are edible and quite delicious, with a spicy kick!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 Tip Top Mahogany nasturtium is an heirloom variety that is incredibly easy to grow. It can grow in a range of soil conditions, as long as it is well-draining. The plant prefers full sun but can tolerate some light shade. Avoid over-fertilizing, as this will lead to excessive foliage growth and fewer flowers.
When to Grow
Sow seeds outdoors in the spring after the danger of the last frost has passed. For warm climates (USDA Zones 9-11), nasturtiums can be planted in the fall for blooms during cooler months. If you live in a cooler climate, you can start seeds indoors 4 weeks before the last frost and transplant them carefully to avoid disturbing their roots. The ideal germination temperature is 55-65 F. Learn about your area’s hardiness zones and first/last frost dates in our blog post ‘Our Experts Answer Questions, Share Resources.’
How to Sow and Plant
Soak seeds in warm overnight before planting to soften their hard outer coat and encourage faster germination. Sow seeds 1/2-1 inch deep in well-draining soil. Space plants 8-12 inches apart for good airflow and room for growth. Plant in a location with full sun for the best blooms, but the plants will tolerate some light shade.
How to Grow
Water nasturtiums moderately but avoid overwatering, as they prefer slightly drier conditions once established. Regular deadheading of spent flowers encourages continuous blooming throughout the growing season. Fertilizers are not necessary and should be avoided, as overly rich soil can lead to foliage growth at the expense of flowers. Nasturtiums are pest-resistant but can occasionally attract aphids, which can be easily managed by spraying the plants with water or using insecticidal soap.
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
How do I encourage more blooms for Tip Top Mahogany nasturtiums?
Deadhead spent flowers regularly to encourage the plant to produce more blooms throughout the growing season.
Can Tip Top Mahogany nasturtiums grow in poor soil?
Yes, nasturtiums thrive in poor to moderately fertile soil as long as it is well-draining. Overly rich soil can lead to more leaves but fewer flowers.
Does the Tip Top Mahogany nasturtium need a trellis or support?
No, this is a compact, bushy variety that grows upright and does not require trellises or support structures.
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