Growing Potatoes from True Potato Seeds (TPS)
Growing potatoes from true seeds—not tubers—is a fascinating way to breed new varieties and save money. While it’s more challenging than planting tubers, it offers genetic diversity, disease avoidance, and a rewarding experience for gardeners who love an experiment.
What Are True Potato Seeds (TPS)?
- TPS are the actual seeds produced inside potato fruits (berries) that sometimes form after potatoes flower.
- Unlike seed potatoes (tubers), TPS grow into completely new plants—like planting apple seeds instead of grafted trees.
- Each TPS plant is genetically unique!
Advantages of TPS
- Genetic Diversity:
Every plant is different—potential for disease resistance, color, shape, and new flavors. - Disease-Free Start:
Avoids soil-borne diseases often carried by tubers. - Seed Storage:
True seeds are smaller, store easily, and keep for years.
Challenges of TPS
- Longer to Mature:
TPS-grown potatoes take longer (often a full season or more) and commonly yield smaller tubers the first year. - Variation:
Crops aren’t uniform—tubers may differ widely in color, shape, and size. - Extra Steps:
TPS seedlings need to be started early indoors and transplanted out after frost.
How to Grow Potatoes from TPS
- Collect Seeds:
- Only some varieties set berries. Wait until berries are fully ripe, then mash and ferment the pulp for a few days, rinse seeds, and dry.
- Start Indoors:
- Sow TPS thinly in trays 10–12 weeks before last frost. Cover lightly, keep moist, and provide warmth (18–22°C/65–72°F).
- Prick out seedlings when large enough to handle.
- Transplant:
- Move strong seedlings to small pots, then harden off and plant outside after the last frost.
- Grow On:
- Care as for regular potatoes: water, feed, and earth up.
- Select Best Plants:
- Harvest tubers in late summer/autumn. Save favorites to replant as tubers next season—this stabilizes your new variety!
Tips for Success
- Start more seedlings than you need; select the healthiest to plant out.
- Save seed from the best plants each year to gradually improve your own strain.
Is TPS for Beginners?
- Not recommended for brand-new grower—but a perfect project for enthusiasts ready to experiment and breed their own “potato originals.”
⭐ Recommended Products — Garden & Allotment Essentials for March
March is when the growing season truly begins. Seeds are being sown daily, beds are prepared and late frosts are still possible — these essentials help produce strong plants and a successful start.
Seed Trays, Modules & Propagation Kits — perfect for tomatoes, brassicas, lettuce, onions and flowers. 👉
Click here to see top options
Heated Propagators, Heat Mats & Grow Lights — improves germination and prevents leggy seedlings during cold nights. 👉
Click here to see top options
Seed & Cutting Compost — essential for healthy seedlings and strong root growth. 👉
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Garden Fleece & Plant Protection Covers — protects seedlings, potatoes and early plantings from late frost. 👉
Click here to see top options
Spring Vegetable Seeds — carrots, beetroot, peas, spinach and salads can all be started now. 👉
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Garden Kneeler & Seat — makes long sowing and planting sessions far more comfortable. 👉
Click here to see top options
Pressure Washer (Greenhouse & Patio Cleaning) — clean patios, paths and greenhouses before planting. 👉
Click here to see top options
Solar Garden Lights — perfect for enjoying the garden during brighter spring evenings. 👉
Click here to see top options