What To Know
- By following the steps outlined in this comprehensive guide, you can sow rhubarb seeds successfully and enjoy a bountiful harvest for years to come.
- Forced rhubarb is grown indoors in darkness to produce early, tender stalks, while outdoor rhubarb is grown in the garden and produces stalks later in the season.
- Rhubarb seeds are small and can be sown directly into the garden or started indoors in a seed tray.
Rhubarb, a versatile vegetable prized for its tart stalks, can be easily grown from seeds. By following the steps outlined in this comprehensive guide, you can sow rhubarb seeds successfully and enjoy a bountiful harvest for years to come.
Selecting the Right Seeds
The first step in sowing rhubarb seeds is selecting the right variety. There are two main types of rhubarb: forced rhubarb and outdoor rhubarb. Forced rhubarb is grown indoors in darkness to produce early, tender stalks, while outdoor rhubarb is grown in the garden and produces stalks later in the season.
Preparing the Soil
Rhubarb prefers well-drained, fertile soil with a pH between 6.0 and 6.8. Before sowing, amend the soil with compost or manure to improve fertility and drainage.
Sowing the Seeds
Rhubarb seeds are small and can be sown directly into the garden or started indoors in a seed tray.
Direct Sowing:
- Sow seeds in early spring, after the last frost date.
- Make shallow furrows 1/4 inch deep and 2 feet apart.
- Space seeds 6-8 inches apart within the furrows.
- Cover the seeds with soil and water gently.
Indoor Sowing:
- Sow seeds in a seed tray filled with a seed starting mix.
- Press the seeds into the soil but do not cover them.
- Keep the seed tray warm and moist.
- Transplant seedlings outdoors when they have developed their first set of true leaves.
Germination and Care
Rhubarb seeds typically germinate within 10-14 days. Keep the soil moist during germination and provide plenty of sunlight.
Once the seedlings have emerged, thin them to the strongest plant every 2 feet. Water regularly and fertilize monthly with a balanced fertilizer.
Harvesting
Rhubarb stalks can be harvested when they are 12-18 inches long. Cut the stalks at the base of the plant, leaving the roots intact. Rhubarb can be harvested multiple times throughout the season.
Forcing Rhubarb (Optional)
Forcing rhubarb indoors allows you to harvest early, tender stalks. To force rhubarb:
- Dig up rhubarb roots in late fall.
- Plant the roots in deep pots filled with potting mix.
- Keep the pots in a dark, cool place (40-50°F).
- Water the roots regularly.
- After 4-6 weeks, the rhubarb will produce tender, pink stalks.
Pests and Diseases
Rhubarb is generally a hardy plant, but it can be affected by some pests and diseases.
- Aphids: Control aphids by spraying with insecticidal soap or neem oil.
- Slugs: Protect rhubarb from slugs by using slug bait or placing copper tape around the plants.
- Crown rot: Crown rot is a fungal disease that can cause the roots to rot. Prevent crown rot by planting rhubarb in well-drained soil and avoiding overwatering.
The Bottom Line: Rhubarb for Years to Come
By following the steps outlined in this guide, you can successfully sow rhubarb seeds and enjoy a bountiful harvest of tart, versatile stalks. With proper care, rhubarb plants can produce for up to 15 years, providing you with a steady supply of this delicious and nutritious vegetable.
Top Questions Asked
1. How long does it take for rhubarb seeds to germinate?
Rhubarb seeds typically germinate within 10-14 days.
2. How deep should I plant rhubarb seeds?
Rhubarb seeds should be planted 1/4 inch deep in the soil.
3. How far apart should rhubarb plants be spaced?
Rhubarb plants should be spaced 2 feet apart.
4. Can I force rhubarb indoors?
Yes, you can force rhubarb indoors to harvest early, tender stalks.
5. What pests and diseases can affect rhubarb?
Rhubarb can be affected by aphids, slugs, and crown rot.
