🌿 Starting from seed for nasturtiums is a relatively simple and rewarding process that requires minimal equipment and care. To begin, nasturtium seeds can be obtained from a reputable supplier or online retailer, and should be stored in an airtight container to preserve their viability. Once the seeds are ready, they can be sown directly into seed trays or small pots filled with a good quality seed starting mix, typically in late spring or early summer, when the soil has warmed up to at least 60°F (15°C). The seeds should be sown about 1/4 inch (6-8 mm) deep and 1-2 inches (2.5-5 cm) apart, and the soil should be kept consistently moist but not waterlogged. Nasturtium seeds germinate within 7-10 days, and once the seedlings have two sets of leaves, they can be transplanted into larger pots or directly into the garden, where they will thrive in full sun and well-drained soil. To promote healthy growth, nasturtiums require regular watering, fertilization, and pruning, and should be protected from extreme temperatures and pests. By following these simple steps, gardeners can enjoy a bountiful harvest of these colorful, edible flowers, which can be used in salads, as a garnish, or as a decorative element, and can also be grown as a companion plant to attract beneficial insects and improve soil health.

How to Start Nasturtiums from Seed

Nasturtiums are a popular annual flower known for their vibrant colors, delicate petals, and spicy flavor. If you're looking to grow nasturtiums from seed, this guide will walk you through the process from starting seeds indoors to transplanting them outside.

Getting Started

Before you begin, make sure you have the necessary materials:

• Nasturtium seeds (available at most gardening stores or online)
• Seed starting mix
• Small pots or cell trays (at least 1-2 inches deep)
• Water
• A warm location with indirect light (e.g., a sunny windowsill or grow light)
• Fertilizer
• Pruning shears

Step 1: Sowing Seeds Indoors

1. Fill the small pots or cell trays with seed starting mix, leaving about 1/4 inch of space at the top.
2. Plant the nasturtium seeds about 1/4 inch deep and 1-2 inches apart. Cover the seeds with a thin layer of the mix.
3. Water the mix gently but thoroughly. Make sure the mix is moist but not waterlogged.
4. Place the pots or cell trays in a warm location with indirect light. The ideal temperature for germination is around 70-80°F (21-27°C).
5. Keep the mix consistently moist but not waterlogged. You can cover the pots or cell trays with a clear plastic bag to maintain humidity and promote germination.

Step 2: Germination and Seedling Care

1. Nasturtium seeds typically take 7-10 days to germinate. Keep the mix moist and wait for the seeds to sprout.
2. Once the seeds have germinated, remove the plastic bag or cover to prevent overheating.
3. Continue to keep the mix consistently moist but not waterlogged.
4. As the seedlings grow, you can start to reduce the frequency of watering. Make sure the mix is moist but not waterlogged.
5. Fertilize the seedlings with a balanced fertilizer once they have two sets of leaves.

Step 3: Transplanting Outside

1. Once the nasturtium seedlings have 2-3 sets of leaves, they are ready to be transplanted outside.
2. Choose a location with full sun and well-draining soil. Nasturtiums prefer a slightly acidic to neutral soil pH (around 6.0-7.0).
3. Harden off the seedlings by gradually exposing them to outdoor conditions over the course of 7-10 days. Start by placing them in a shaded area and gradually increasing the amount of direct sunlight.
4. Transplant the seedlings into larger pots or directly into the garden, spacing them about 6-8 inches apart.
5. Water the seedlings thoroughly after transplanting and continue to keep the soil consistently moist but not waterlogged.

Step 4: Care and Maintenance

1. Nasturtiums are relatively low-maintenance plants. They prefer well-draining soil and full sun.
2. Water the plants regularly, but make sure the soil is not waterlogged.
3. Fertilize the plants with a balanced fertilizer once a month.
4. Prune the plants regularly to encourage bushy growth and prevent them from flowering too early.
5. Watch out for pests like aphids, whiteflies, and slugs. Use organic or integrated pest management (IPM) methods to control any infestations.

Tips and Variations

• Nasturtiums come in a variety of colors, including yellow, orange, red, and bi-colored. You can also combine different varieties to create unique and interesting color combinations.
• Nasturtiums are a good choice for container gardens or hanging baskets. They add a pop of color and can be easily harvested for their edible flowers and leaves.
• Nasturtiums are also a good choice for cut flower arrangements. They have a long vase life and can add a delicate, spicy flavor to salads and other dishes.

Conclusion

Starting nasturtiums from seed can be a fun and rewarding experience. With the right materials and care, you can grow these beautiful and delicious flowers from seed to maturity. Remember to provide your nasturtiums with plenty of sunlight, water, and nutrients, and enjoy their vibrant colors and spicy flavor all season long.

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