For commercial growers, every input cost matters. Strawberry crowns are reliable, but they're expensive — especially when you're planting thousands of them. Seed-grown strawberries offer a compelling alternative: lower cost per plant, more variety flexibility, and the ability to scale production without being locked into a single supplier's crown inventory.
This guide walks you through the complete process of starting strawberries from seed in plug trays — from germination through transplant — with a focus on commercial-scale production. Whether you're growing for a farm stand, a U-pick operation, a CSA, or a wholesale account, seed-grown strawberries can be a smart addition to your production system.
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Why Grow Strawberries from Seed?
The case for seed-grown strawberries comes down to three things: cost, flexibility, and availability.
Cost. Strawberry crowns typically run $0.50–$1.50 each at commercial quantities. Seed-grown plugs, by contrast, can cost as little as $0.05–$0.15 per plant when you're starting from bulk seed. At 10,000 plants, that's a potential savings of $5,000–$10,000 on plant material alone — before you factor in shipping and handling on heavy crown shipments.
Flexibility. Seeds give you access to a wider range of varieties, including ornamental and day-neutral types that aren't widely available as crowns. You can also stagger your starts to hit specific market windows, something that's harder to do when you're dependent on crown availability from a single nursery.
Availability. Crown supply can be tight, especially for popular varieties. Bulk seed is available year-round, ships light, and stores well — giving you more control over your production calendar.
For a broader look at why buying in bulk makes sense for commercial operations, see our post on How to Save Money and Time: Why Buying Seeds in Bulk Is the Smart Gardener's Choice.
Choosing the Right Strawberry Varieties for Plug Tray Production
Not all strawberry varieties perform equally well from seed. For commercial plug tray production, you want varieties with strong, uniform germination, good vigor at transplant, and reliable fruiting in the first season. Day-neutral and everbearing types are generally the best fit — they fruit regardless of day length and can produce in the first year from seed, unlike June-bearing types that typically fruit in year two.
Top Varieties for Commercial Seed Production
Strawberry Delizz — One of the top commercial seed varieties available. Delizz produces large, sweet, bright red fruit on compact plants. It's day-neutral, fruits in the first year, and performs well in both container and field production. Excellent for farm stands and U-pick where fruit size and appearance matter.
Strawberry Fresca — A reliable everbearing variety with strong germination and good uniformity. Fresca produces medium-sized, flavorful fruit over a long season. It's a workhorse variety for growers who need consistent production from spring through fall.
Strawberry Berries Galore Pink — Part of the Berries Galore series, this variety offers ornamental appeal alongside edible fruit. The pink flowers and compact habit make it ideal for container sales, hanging baskets, and retail garden center programs where visual impact drives purchase decisions.
Strawberry Berries Hill Toscana — A premium ornamental-edible variety with deep pink flowers and excellent fruit flavor. Toscana is a strong performer in container programs and has become a favorite for growers supplying garden centers and specialty retailers.
Strawberry Mignonnette — A classic alpine strawberry with small, intensely flavored fruit. Mignonnette is ideal for specialty markets, restaurant accounts, and farm-to-table programs where flavor intensity commands a premium price. It's also highly productive and easy to grow from seed.
Plug Tray Production: Step-by-Step
Step 1 – Timing Your Starts
Strawberries are slow from seed — plan for 10–14 weeks from sowing to transplant-ready plugs. For spring field planting, work backward from your last frost date and start seeds in January or February. For fall container sales or late-season transplants, start in June or July.
Unlike many annuals, strawberries don't rush. Germination alone takes 14–21 days at optimal temperatures, and seedlings grow slowly in the early weeks. Build that time into your production calendar and don't try to compress it.
Step 2 – Germination Setup
Strawberry seeds require specific conditions to germinate reliably:
- Temperature: 65–75°F is the sweet spot. Use a heat mat to maintain consistent soil temperature.
- Light: Strawberry seeds are light-dependent germinators — do not cover them with media. Surface sow and press gently to ensure good seed-to-media contact.
- Moisture: Keep the media consistently moist but never waterlogged. A humidity dome for the first 7–10 days helps maintain moisture without overwatering.
- Media: Use a fine-textured, sterile germination mix. Avoid heavy mixes that retain too much moisture — strawberry seedlings are susceptible to damping off.
Sow into 128-cell or 200-cell plug trays for germination, then pot up to 72-cell trays once seedlings have 2–3 true leaves. This two-stage approach gives you better germination uniformity and reduces the risk of overwatering young seedlings.
Step 3 – Seedling Care
Once germinated, strawberry seedlings need:
- Light: 14–16 hours of light per day. Supplemental lighting is essential for January and February starts in northern climates. LED grow lights at 6–8 inches above the canopy work well.
- Temperature: Grow on at 60–65°F. Cooler temperatures slow growth but produce stockier, more transplant-ready plugs.
- Fertilizer: Begin a dilute balanced fertilizer (100–150 ppm nitrogen) once seedlings have their first true leaf. Increase to 200 ppm as plants develop. Avoid high-ammonium fertilizers — they promote soft, disease-prone growth.
- Air circulation: Run a fan to promote strong stems and reduce disease pressure. Strawberry seedlings in humid, still conditions are prone to botrytis.
Step 4 – Potting Up to Plug Trays
At 2–3 true leaves (typically 3–4 weeks after germination), transplant seedlings from germination trays into 72-cell plug trays. Use a well-draining, peat- or coir-based growing mix with a pH of 5.8–6.2. Strawberries are sensitive to high pH — iron deficiency and stunted growth are common when pH drifts above 6.5.
Grow plugs on for another 6–8 weeks until they have a well-developed root system and 4–6 true leaves. At this stage, they're ready for field transplanting, container potting, or sale as finished plugs to other growers.
Step 5 – Hardening Off and Transplanting
Before moving greenhouse-grown plugs to the field, harden them off over 7–10 days by gradually increasing outdoor exposure. Start with 2–3 hours of morning sun and work up to full-day exposure. Skipping this step leads to transplant shock and setbacks that can delay fruiting by weeks.
Transplant into well-prepared beds with good drainage. Strawberries do not tolerate wet feet — raised beds or mounded rows are ideal for heavy soils. Space plants 12–18 inches apart in rows 24–36 inches apart, depending on your variety and production system.
Plug Tray Sales: A Secondary Revenue Stream
One of the advantages of seed-grown strawberry production is the ability to sell plugs as a product in their own right. Garden centers, landscapers, and home gardeners are willing to pay $1.50–$3.00 per plug for healthy, well-rooted strawberry starts — a significant markup over your seed and production costs.
If you're already running a greenhouse operation, adding a strawberry plug program requires minimal additional infrastructure. The key is timing: have plugs ready for sale in April and May when consumer demand for edible plants peaks. Start seeds in January to hit this window.
For more on building a profitable seed-based production program, see our guide on Buying Bulk Seeds To Grow Many Cut Flower Varieties — the same principles apply to edible crops.
Common Problems and How to Avoid Them
Poor germination. The most common cause is covering the seeds. Strawberry seeds need light to germinate — surface sow and do not cover. Also check your soil temperature; below 60°F, germination slows dramatically and becomes erratic.
Damping off. Use sterile media, avoid overwatering, and ensure good air circulation. A preventive drench with a copper-based fungicide at sowing can help in high-humidity environments.
Slow growth. Strawberry seedlings are naturally slow in the first 3–4 weeks. If growth stalls after that, check pH, light levels, and fertilizer rates. Iron deficiency (yellowing between leaf veins) is a common indicator of high pH.
Transplant shock. Always harden off properly and transplant on a cloudy day or in the evening to reduce stress. Water in with a dilute starter fertilizer solution to encourage rapid root establishment.
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FAQ
How long does it take to grow strawberries from seed?
From sowing to transplant-ready plug, expect 10–14 weeks. Germination alone takes 14–21 days at 65–75°F. First fruit typically appears 4–6 months after sowing for day-neutral and everbearing varieties — making a January or February start ideal for summer fruiting.
Are seed-grown strawberries as productive as crown-grown plants?
For day-neutral and everbearing varieties, yes — seed-grown plants can match crown productivity in the first season. June-bearing types are less suited to seed production because they typically don't fruit until year two. Stick with day-neutral varieties like Delizz and Fresca for first-year production.
What plug tray size is best for strawberry seedlings?
Start in 128-cell or 200-cell trays for germination, then pot up to 72-cell trays for grow-on. The 72-cell size gives roots enough room to develop a strong plug without becoming pot-bound before transplant.
Do strawberry seeds need cold stratification?
Most modern commercial varieties do not require cold stratification — they're bred for reliable germination at room temperature. However, if you're working with wild or alpine types, a 2–4 week cold stratification period (35–40°F in moist media) can improve germination rates.
Can I sell strawberry plugs directly to consumers?
Absolutely. Strawberry plugs are a high-demand retail item in spring. Healthy 72-cell plugs with 4–6 true leaves sell well at farmers markets, garden centers, and through CSA add-on programs at $1.50–$3.00 per plug. The margin over seed cost is excellent.
How many seeds do I need for a commercial plug tray program?
Plan for 1,000-seed packs as your base unit. With 80–85% germination and normal thinning losses, a single 1,000-seed pack will yield approximately 700–800 transplant-ready plugs. For a 10,000-plug program, order 13–15 packs to account for germination variability and culls.
What's the best way to water strawberry seedlings in plug trays?
Bottom watering is ideal for young seedlings — it encourages deep root development and keeps the surface media drier, reducing damping off risk. As plants mature, overhead irrigation with a fine mist is fine, but always water in the morning so foliage dries before nightfall.