🌿 Starting rhubarb from seed can be a rewarding and cost-effective way to grow this versatile and delicious vegetable, but it requires patience and proper care. Unlike many other vegetables, rhubarb is typically grown from crowns or divisions rather than seeds, as seed-grown rhubarb can be unpredictable and may not produce consistent results. However, if you're looking to start from seed, it's best to do so in the fall or early spring, when the plant is dormant, to give the seedlings a head start on the growing season. To begin, collect the seeds from the plant's seed pods, which can be identified by their long, narrow shape and flat, papery texture. Allow the seeds to dry completely, either by air-drying them or by spreading them out in a single layer on a paper towel. Next, sow the seeds about 1/8 inch deep and 1-2 inches apart in a well-draining seed starting mix, and keep the soil consistently moist but not waterlogged. Provide the seedlings with bright, indirect light and maintain a cool temperature around 60-70°F (15-21°C), which will help to encourage germination. Once the seedlings have emerged, thin them out to the strongest and healthiest, and transplant them into individual pots or directly into the garden when they have 2-3 sets of leaves. Rhubarb seedlings will take about 2-3 months to establish themselves, and will eventually grow into healthy, productive plants that can be harvested in the spring and summer months. It's worth noting that seed-grown rhubarb may not produce stalks as thick and tender as crown-grown rhubarb, and may also be more prone to disease and pests, so if you're looking for a more reliable and consistent harvest, growing from crowns is still the recommended method.
How to Start Rhubarb from Seed
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Rhubarb is a tart and versatile vegetable that can be grown in most gardens. While many people buy rhubarb crowns or divisions from a nursery, starting from seed can be a fun and rewarding experience. In this post, we will walk you through the process of starting rhubarb from seed, from sowing to transplanting.
Choosing the Right Rhubarb Variety
Not all rhubarb varieties are suitable for starting from seed. The most common varieties used for seed starting are 'Victoria' and 'Tombstone'. These varieties are known for their high seed viability and easy-to-grow nature. However, it's essential to note that some rhubarb varieties may not produce true-to-type offspring, meaning that the resulting seedlings may not have the same characteristics as the parent plant.
Sowing Rhubarb Seeds
Rhubarb seeds are small and require a specific sowing technique to ensure success. Here's a step-by-step guide to sowing rhubarb seeds:
Materials Needed
- Rhubarb seeds
- Seed starting mix
- Small pots or cell trays
- Water
- Grow lights or a sunny windowsill
Instructions
- Fill small pots or cell trays with seed starting mix, leaving about 1/4 inch of space at the top.
- Plant the rhubarb seeds about 1/4 inch deep and 1-2 inches apart. Cover the seeds with a thin layer of seed starting mix.
- Water the seeds gently but thoroughly. Make sure the mix is moist but not waterlogged.
- Provide the seeds with a warm and humid environment. Place the pots or cell trays on a sunny windowsill or under grow lights.
- Maintain a temperature of around 65-75°F (18-24°C) during the day and no lower than 55°F (13°C) at night.
Germination and Seedling Care
Rhubarb seeds typically take 7-14 days to germinate. Once the seeds have germinated, it's essential to provide the seedlings with adequate light, water, and nutrients.
Light
Rhubarb seedlings require a lot of light to grow well. If you don't have a sunny windowsill, you can use grow lights to provide the necessary light. Aim for at least 12-14 hours of light per day.
Watering
Rhubarb seedlings require consistent moisture, but make sure not to overwater. Check the soil daily, and water only when the top inch of soil feels dry.
Nutrition
Rhubarb seedlings require a balanced diet of nutrients. Use a fertilizer specifically designed for seedlings, and follow the instructions on the label.
Transplanting Rhubarb Seedlings
Once the rhubarb seedlings have 2-3 sets of leaves, it's time to transplant them into individual pots or directly into the garden.
Instructions
- Choose a pot that is at least 6-8 inches deep to accommodate the rhubarb roots.
- Use a well-draining potting mix, and add a layer of compost or fertilizer to the bottom of the pot.
- Gently remove the seedling from the pot or cell tray, taking care not to damage the roots.
- Trim the leaves back to about 2-3 inches from the soil surface.
- Plant the seedling in the pot, making sure the crown (where the stem meets the roots) is level with the soil surface.
- Water the plant thoroughly, and provide it with adequate light and nutrients.
Planting Rhubarb Crowns or Divisions
If you prefer not to start from seed, you can buy rhubarb crowns or divisions from a nursery. Follow these steps to plant rhubarb crowns or divisions:
Materials Needed
- Rhubarb crowns or divisions
- Well-draining soil
- Gardening gloves
Instructions
- Choose a location with full sun and well-draining soil.
- Dig a hole that is about 12-18 inches deep and twice as wide as the crown.
- Place the crown or division in the hole, making sure the crown is level with the soil surface.
- Add a layer of compost or fertilizer to the soil, and water thoroughly.
- Mulch around the plant to retain moisture and suppress weeds.
Conclusion
Starting rhubarb from seed can be a fun and rewarding experience. With the right materials and a little patience, you can successfully grow rhubarb from seed. Remember to choose the right variety, provide adequate light, water, and nutrients, and transplant the seedlings carefully. Happy growing!