Growing Oxalis tuberosa, also known as Oca, can be an enjoyable and rewarding experience. This plant is propagated from tubers, making it similar to potatoes in terms of its growing method. In this response, I will provide you with detailed steps on how to grow Oxalis tuberosa successfully.
1. Choosing the right location: Oca prefers sandy soil that is well-draining. It thrives in partial shade, so selecting a spot that receives about 4-6 hours of sunlight per day is ideal. If you live in a region with hot summers, providing some afternoon shade can help protect the plants from excessive heat.
2. Timing the planting: Oca is typically planted in late winter or early spring. In my personal experience, I have found mid-March to be a suitable time for planting. By this time, the tubers should have had a period of dormancy and be ready for new growth.
3. Preparing the tubers: Before planting, it’s essential to inspect the tubers for any signs of damage or disease. Only select healthy tubers for planting. If the tubers are large, you can cut them into smaller pieces, ensuring that each piece has at least one bud or “eye.” This will encourage new growth.
4. Planting in pots: Fill pots with well-draining, sandy soil. Place the tubers in the pots, burying them about 2-3 inches deep with the buds facing upward. It’s important to provide enough space between tubers to allow for proper growth. Water the pots thoroughly after planting.
5. Caring for young vines: Keep the pots in a warm, well-lit area indoors until the tubers form healthy vines. This usually takes a few weeks. During this time, ensure that the soil is consistently moist but not waterlogged. Once the vines have grown to about 6-8 inches in length, they are ready for transplantation.
6. Transferring to tubs or the ground: After the threat of frost has passed, and the soil has warmed up, transplant the young Oca vines to larger containers or directly into the ground. If planting in containers, choose tubs that are at least 12 inches deep to accommodate the developing tubers. Space the plants about 12-18 inches apart to allow for proper growth.
7. Watering and fertilizing: Oca prefers cool, damp weather, so it’s important to keep the soil consistently moist. However, avoid overwatering, as this can lead to root rot. Mulching around the plants can help retain moisture and regulate soil temperature. Fertilize the plants every 4-6 weeks with a balanced, organic fertilizer.
8. Pest and disease control: Oca is relatively resistant to pests and diseases. However, be on the lookout for common garden pests such as aphids, slugs, and snails. Use organic pest control methods if necessary. Regularly inspect the plants for any signs of disease or damage and take appropriate measures to address them promptly.
Remember that Oca generally takes about 120-150 days from planting to harvest, so patience is key. As the foliage begins to die back, it’s a sign that the tubers are ready for harvest. Gently dig up the tubers, being careful not to damage them. Store them in a cool, dry place for a few weeks to allow the flavors to develop fully before consuming.
Growing Oxalis tuberosa can be a delightful experience, and with proper care and attention, you can enjoy a bountiful harvest of this unique and tasty tuber.
