Growing strawberries from seed is a slower, more patient route than buying plants — but it is the only way to grow many alpine strawberries, and it is satisfying and cheap for raising lots of plants. The key is to understand that strawberry seed is slow and a little fussy, and that a seed-grown plant usually fruits the following year rather than the same season.
Seed or runners — which route?
Most garden strawberries are grown from runners (the baby plants on long stems) or from bought plug plants, which fruit sooner and come true to variety. Alpine strawberries, by contrast, make few or no runners and come reliably from seed, producing masses of tiny, intensely aromatic fruit — so seed is the natural choice for them. Named hybrid varieties grown from seed can be variable, so grow those from runners if you want a specific type.
Cold-treating the seed
Strawberry seed germinates better after a cold spell that mimics winter. A common method is to keep the seed in the fridge for a few weeks before sowing (cold stratification), which breaks dormancy and improves and evens out germination. Alpine seed is less demanding than large-fruited types but still benefits.
Sowing
Sow onto the surface of moist, fine seed compost and press the seed in gently but do not cover it — strawberry seed needs light to germinate. Keep it warm and moist, ideally under a propagator lid, and be patient: germination is slow and erratic, often taking several weeks, so do not give up on a tray too early. Give the seedlings strong light as soon as they appear.
Pricking out and growing on
The seedlings are tiny and delicate at first. Once they have a couple of true leaves, prick them out carefully into modules or small pots and grow them on in good light, keeping them just moist. Harden them off before planting out after frost.
Planting out
Plant into sun in fertile, well-drained soil or into containers, spacing plants about 30 cm apart. Set them at the right depth: the crown (where the leaves emerge) should sit right at soil level — buried too deep it rots, planted too high it dries out. Water them in and keep them weed-free.
When will they fruit?
Alpines sown early can fruit in their first year, but most seed-grown strawberries put their energy into establishing and crop properly the following summer. That wait is the main trade-off against buying runners — but you will have raised many plants for the price of a seed packet.
Common problems
Poor or slow germination is normal — patience and the cold treatment help. Seedlings collapsing at the base are suffering damping-off from cold, wet, crowded conditions. On fruiting plants, birds take ripe fruit (net them) and grey mould (botrytis) rots fruit in damp weather — keep berries off wet soil with straw or mats and pick regularly.
Everbearing and alpine types explained
Strawberries fall into a few groups worth knowing when you grow from seed. June-bearing types give one big flush of large fruit in early summer. Everbearing and perpetual types crop in smaller amounts over a longer season. Alpine strawberries (Fragaria vesca) are the small-fruited, intensely flavoured woodland type that make almost no runners and so are grown from seed — they are the ones that really reward seed-raising, cropping over many weeks and thriving even in part shade at the edge of a border.
First-year care and beyond
In the plant’s first year, especially with large-fruited types raised from seed, many gardeners remove the earliest flowers so the plant builds a strong crown and root system before it fruits — this pays off with a heavier crop the following summer. Keep plants weed-free, watered while establishing, and mulched with straw or fibre mats to lift ripening fruit off wet soil and deter rot and slugs. After fruiting, tidy old leaves; strawberry plants stay productive for a few years before it is worth replacing them with fresh stock.
Containers and hanging baskets
Strawberries are ideal container plants and grow beautifully in pots, troughs, tiered planters and hanging baskets, where the fruit hangs clear of the soil and away from many pests. Use a good compost, water consistently — containers dry fast and drought ruins the fruit — and feed with a high-potassium feed once flowering starts. Raising your own plants from seed is a cheap way to fill several containers, and alpines in particular look and crop wonderfully in pots.
