What To Know
- If you are planting nasturtiums in containers, choose a pot that is at least 12 inches in diameter.
- The flowers can be eaten fresh, added to salads, or used as a garnish.
- If the plants do become infected, remove the affected leaves and spray the plants with a fungicide.
Nasturtiums, also known as Indian cress, are vibrant and edible flowers that add a peppery flavor to salads, sandwiches, and other dishes. Growing nasturtiums from seeds is a simple and rewarding process that can be enjoyed by gardeners of all levels. This comprehensive guide will provide you with step-by-step instructions on how to plant nasturtium seeds, from preparing the soil to harvesting the flowers.
Choosing the Right Seeds
The first step in planting nasturtium seeds is choosing the right variety. There are many different types of nasturtiums available, each with its own unique color and shape. Some popular varieties include:
- Alaska: Compact variety with white flowers
- Empress of India: Large, showy flowers in shades of orange, yellow, and red
- Jewel of Africa: Dwarf variety with trailing stems and yellow flowers
- Ladybird: Double-flowered variety with red or yellow petals
- Moonlight: White-flowered variety that blooms at night
Preparing the Soil
Nasturtiums prefer well-drained soil that is rich in organic matter. Before planting, amend the soil with compost or manure to improve drainage and fertility. The ideal pH range for nasturtiums is between 6.0 and 7.0.
Planting the Seeds
Nasturtium seeds can be planted directly in the garden after the last frost. Sow the seeds about 1/2 inch deep and 6 inches apart. Water the seeds well and keep the soil moist until germination occurs.
Tips for Planting:
- Nasturtiums can also be started indoors 4-6 weeks before the last frost. Sow the seeds in a seed tray filled with seed starting mix.
- Harden off the seedlings by gradually exposing them to outdoor conditions before transplanting them into the garden.
- If you are planting nasturtiums in containers, choose a pot that is at least 12 inches in diameter.
Watering and Fertilizing
Nasturtiums are drought-tolerant plants, but they will produce more flowers if they are watered regularly. Water the plants deeply, especially during hot and dry weather.
Fertilize the nasturtiums every few weeks with a balanced fertilizer. Avoid using too much fertilizer, as this can lead to leggy plants with fewer flowers.
Mulching and Weeding
Mulching around the nasturtiums will help to retain moisture and suppress weeds. Use a layer of organic mulch, such as straw, leaves, or compost.
Weeds can compete with the nasturtiums for water and nutrients, so it is important to keep the garden weed-free.
Pruning and Deadheading
Pruning the nasturtiums will help to promote bushier growth and more flowers. Pinch back the tips of the stems when the plants are about 6 inches tall.
Deadheading the spent flowers will encourage the plants to produce more blooms. Simply remove the flowers as they fade.
Harvesting the Flowers
Nasturtium flowers are ready to harvest when they are fully open. Use scissors to cut the flowers from the stems. The flowers can be eaten fresh, added to salads, or used as a garnish.
Pests and Diseases
Nasturtiums are relatively pest-free and disease-resistant. However, they can be susceptible to aphids, whiteflies, and powdery mildew.
- Aphids: Control aphids by spraying the plants with a strong stream of water or using insecticidal soap.
- Whiteflies: Whiteflies can be controlled by using a systemic insecticide.
- Powdery mildew: Powdery mildew can be prevented by providing good air circulation around the plants. If the plants do become infected, remove the affected leaves and spray the plants with a fungicide.
Companion Planting
Nasturtiums are a great companion plant for many vegetables, including tomatoes, cucumbers, and squash. The flowers attract pollinators, which can help to increase fruit production. Nasturtiums also have a natural pest-repelling effect, which can help to protect neighboring plants from insects.
Recommendations: The Joys of Growing Nasturtiums
Growing nasturtiums from seeds is a simple and rewarding process that can be enjoyed by gardeners of all levels. These versatile flowers are edible, beautiful, and easy to grow. With proper care, nasturtiums will thrive in your garden and provide you with a bountiful harvest of flowers all season long.
Frequently Asked Questions
Q: When is the best time to plant nasturtium seeds?
A: Nasturtium seeds can be planted directly in the garden after the last frost. They can also be started indoors 4-6 weeks before the last frost.
Q: How deep should I plant nasturtium seeds?
A: Plant nasturtium seeds about 1/2 inch deep and 6 inches apart.
Q: How often should I water nasturtiums?
A: Water nasturtiums regularly, especially during hot and dry weather. Allow the soil to dry out slightly between waterings.
Q: Do nasturtiums need to be fertilized?
A: Fertilize nasturtiums every few weeks with a balanced fertilizer. Avoid using too much fertilizer, as this can lead to leggy plants with fewer flowers.
Q: How can I prevent pests and diseases from damaging my nasturtiums?
A: Nasturtiums are relatively pest-free and disease-resistant. However, they can be susceptible to aphids, whiteflies, and powdery mildew. Control aphids by spraying the plants with a strong stream of water or using insecticidal soap. Control whiteflies by using a systemic insecticide. Prevent powdery mildew by providing good air circulation around the plants.
