New Life From A Pinch: Propagating Tetragonia decumbens, The “New Zealand Spinach”
Tetragonia decumbens, better known as “New Zealand spinach” (despite its actually being from Australia!), is a delicious and versatile edible green. But what if you could grow your own? It’s easier than you think! This plant can be propagated by both seed and cuttings, making it a great addition to any gardener’s repertoire. Let’s dive into the details:
Seed Propagation: The Classic Approach
- When to Sow: Tetragonia thrives in warm weather and prefers temperatures above 15°C (60°F). Sow seeds directly into the garden after the last frost or start them indoors about 4 weeks before your last frost date.
- Getting Started: Choose a sunny spot with well-drained soil. Sow seeds about 1/4 inch deep and space them 12-18 inches apart. Lightly water and keep the soil moist, but not waterlogged.
- Time to Sprout: Expect germination within 7-14 days.
- Thinning: Once seedlings emerge, thin them to the strongest plants, keeping them spaced about 12 inches apart.
Cuttings: A Quick Way to New Plants
- The Cutting Method: Tetragonia can be easily propagated from stem cuttings. Take 4-6 inch cuttings from healthy, non-flowering stems.
- Prepare the Cutting: Make a clean cut just below a node (where leaves grow). Remove the bottom leaves to expose the nodes below.
- Rooting Medium: Use a well-draining mix, like potting soil or perlite. Dip the cut end of the stem in rooting hormone (optional) and insert it into the rooting medium.
- Care for Your Cuttings: Keep the rooting medium consistently moist. Place your cuttings in a warm, bright location but out of direct sunlight.
- Success! Tetragonia cuttings will root in about 2-3 weeks. Once new growth appears, your cuttings are ready to be transplanted into their final location.
Important Tips for Success
- Choose the Right Time: Spring and early summer are ideal times for propagating Tetragonia.
- Sunlight is Key: This plant needs full sun for optimal growth.
- Water Wisely: Keep the soil consistently moist, but avoid overwatering which can lead to root rot.
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Fertilize Regularly: Use a balanced fertilizer (e.g., 10-10-10) every 2-3 weeks for leafy greens.
Enjoy Your Harvest!
With its delicious leaves that resemble spinach and its ease of propagation, Tetragonia decumbens is a fantastic plant for both beginner and experienced gardeners. So, try your hand at propagating this unique vegetable and enjoy fresh, homegrown New Zealand spinach all season long!