Strawberries are hardy perennials, but the plants become less robust after about three years. Start strawberry plants from seed, and then propagate by cuttings and runners. Continue reading below for some pro tips on how to grow strawberries from seeds.
Numerous hybrids exist listed as F. x ananassa
Season & Zone
Exposure: Full sun
Zone: Most strawberries are hardy to Zone 5
Strawberry seeds benefit from vernalization, which is the simulation of winter in order to break dormancy. Start any time in early to late winter. After that time, they will still work, but they may not produce berries during the first season.
Seal strawberry seed packets in a plastic bag or airtight container and place in the refrigerator for 3-4 weeks. Remove the bag or container from the refrigerator and allow the seeds to reach room temperature over a day or two before breaking the seal. Opening the package too quickly may result in water condensing on the cold seeds, and this will reduce your chances of success. Then, sow the seeds on the surface of pre-moistened, seed starting mix in trays or small containers. Keep the seeded trays under bright fluorescent lights at a constant temperature of 18-24°C (65-75°F). Ensure the seed starting mix stays moist. Germination may take anywhere from 7 to 42 days. Once seeds germinate, increase ventilation to prevent damping off.
When seedlings have their third true leaf, they can be transplanted into their own pots. Be sure to harden the seedlings off gradually before transplanting outside. Space transplants 60cm (24”) apart in rows 90-120cm (36-48”) apart. Grow strawberries in a well-drained, sandy loam that has been generously dug with organic matter such as finished compost or well-rotted manure. Dig 60mL (1/4 cup) complete organic fertilizer into the soil beneath each transplant. Keep soil moist, but not soggy. A mulch of straw around plants may help prevent the soil from drying out.
These little plants respond strongly to nearby plants. Couple them with beans, borage, garlic, lettuce, onions, peas, spinach, and thyme. Avoid Brassicas and fennel.
More on Companion Planting.