What To Plant In A Mississippi Greenhouse For Early Spring Sales

Early spring is a lucrative window for greenhouse growers in Mississippi. With mild winters and eager gardeners and chefs looking for fresh greens, transplants, and colorful bedding plants, a well-timed greenhouse program can capture premium prices. This article explains what to grow, when to sow, how to manage the environment and pests, and how to price and market crops for maximum returns. It emphasizes concrete, actionable details tailored to Mississippi growing conditions and early-season sales (January-March).

Mississippi climate and timing

Mississippi spans primarily USDA zones 7-9. Coastal and southern counties are generally milder than northern counties, but all regions get strong market demand for early-season greenhouse products.

Frost dates and market windows

Know your local average last frost date (ranges: late February to mid-April depending on location). Early spring greenhouse sales typically target January through March to supply:

Farmers markets and roadside stands.
Garden centers and homeowners buying bedding plants.
Restaurants and specialty grocers seeking fresh microgreens, herbs, and baby greens.
Florists needing early-season potted flowers and cut stems.

A greenhouse gives you the flexibility to supply customers weeks to months before outdoor production is possible.

Greenhouse advantages for Mississippi growers

A heated or minimally heated greenhouse allows you to:

Produce high-value crops (microgreens, herbs, transplants) quickly.
Stage crops for continuous supply into early spring.
Reduce cold stress and bolster germination and early growth.
Offer premium, local product when outdoor supplies are low.

Best crops for early spring sales

Choose crops with short production cycles, consistent demand, and good margins. Below are categories and recommended varieties well-suited to Mississippi early spring markets.

Leafy greens and baby salad mixes

Leafy greens are fast, repeat buyers and easy to harvest/pack.

Lettuce: Butterhead (Buttercrunch), loose-leaf (Red Sails, Salad Bowl), romaine (Parris Island).
Spinach: Bloomsdale Long Standing.
Kale: Lacinato (Dinosaur), Red Russian.
Mesclun mixes: arugula (Astro), mizuna, mustard greens.

Production notes: baby-leaf harvest 21-35 days; sow every 7-10 days for continuous supply.

Microgreens and baby greens

Microgreens and baby greens are very high margin and turn very fast.

Microgreens: radish, sunflower, broccoli, pea shoots, mustard.
Packaging: 4-6 oz clamshells for retail; 10×20″ trays wholesale.

Production notes: microgreens harvest in 7-14 days; aim for 100-200 trays per week if selling at markets.

Herbs

Fresh herbs are high-demand at markets and for restaurants.

Cool-tolerant: parsley (Italian flat-leaf), chives, cilantro (note bolting risk when warm).
Warm-tolerant (for later winter/early spring sales with supplemental heat): basil (Genovese), Thai basil for specialty markets.

Production notes: herbs sell well in 4-inch pots or clamshell bunches.

Cole crops and early vegetable transplants

Selling strong, healthy transplants is valuable to gardeners.

Broccoli: Calabrese varieties.
Cabbage: Savoy or early head-forming varieties.
Cauliflower: Snowball.
Bok choy, kohlrabi, Brussels sprouts (for customers who transplant later).

Production notes: start cole crops 4-6 weeks before sale as larger plugs; sell in 4-inch or 6-pack flats.

Bedding plants and flowering pot crops

Color sells in early spring. Start pansies and violas early; petunias and calibrachoa slightly later.

Pansies/Violas: Matrix series, Delta (cold tolerant).
Snapdragons: Potomac series.
Geraniums and begonias: start later in the window for spring sales.

Production notes: pansies can be ready in 6-8 weeks depending on temperature and seedling plug size.

Cut flowers and potted bloomers

Early-season cut flowers: ranunculus (if forced), spray ranunculus, early snapdragons, stock, and dianthus.
Potted bulbs: forced tulips or daffodils for niche markets (requires chilling and planning).

Production notes: cut flowers require planning and space; consider a few high-value runs rather than large acreage early on.

Propagation, scheduling, and succession planting

Production scheduling is the backbone of early-spring greenhouse success. Use reverse scheduling from your target sale date.

General propagation rules

Microgreens: sow 7-14 days before sale.
Baby leaf greens: sow 21-35 days before sale.
Herbs (4-inch pots): start 4-6 weeks before sale.
Bedding plants/pansies: start 6-10 weeks before sale (pansies slower in cool temps).
Tomato/pepper transplants: start 6-8 weeks before intended transplant date for sale as transplants.

Example reverse schedule (target sale week = Week 0)

Week -10 to -8: sow pansies, long-cycle bedding plants.
Week -8 to -6: sow tomatoes/peppers for transplants; begin broccoli/cabbage plugs.
Week -6 to -4: start 4-inch herb pots and larger transplants.
Week -4 to -3: sow baby-leaf mixes for the first round.
Week -2 to -1: sow microgreens and last-minute market trays.
Week 0: harvest microgreens, pack baby-leaf clamshells, stage bedding plants for sale.

Succession planting: stagger sowings every 7-10 days for consistent inventory.

Seed quantities and expected yields (example)

One 1020 tray of baby greens yields approximately 6-8 retail clamshells (4-6 oz).
One 10×20 microgreen tray yields roughly 8-10 retail clamshells (4 oz each).
One 72-cell plug tray produces 72 transplants for 4-inch pots after potting up.

Calculate seed and media needs from tray counts and your sales goals; always order 10-20% extra seed to account for germination variability.

Greenhouse environmental management

Controlling temperature, light, humidity, and air movement is crucial.

Temperature targets

Lettuce/baby greens: germination 60-75degF; grow best 55-70degF day; nights 45-55degF to keep compact and delay bolting.
Microgreens: germinate 65-75degF depending on species.
Basil: germinate 75-85degF; grow 70-80degF day, nights above 60degF.
Tomatoes: germinate 75-85degF; grow 65-75degF days, 55-65degF nights.
Pansies/violas: germinate 60-70degF; cooler temps encourage compact plants.

Use bottom heat mats for seeds that prefer higher germination temps (tomato/pepper) and reduce mat use once seedlings germinate.

Light and photoperiod

Supplemental LED lighting (12-16 hours total light) speeds growth and produces sturdy transplants in short winter days.
Aim for even light distribution; rotate trays if natural light is uneven.

Humidity and airflow

Relative humidity 50-70% is typical, but lower humidity and good airflow reduce fungal diseases.
Use circulating fans and venting to maintain air movement and prevent damping-off and legginess.

Fertility and irrigation

Use a sterile soilless mix (peat-perlite or coconut coir-based) for faster drainage and disease control.
Fertilize seedlings lightly: 100-150 ppm N using a balanced soluble fertilizer after first true leaves.
Monitor EC and pH: target pH 5.8-6.2 in soilless mixes.

Pest, disease, and cultural controls

Early spring greenhouse crops can be vulnerable to pests and pathogens; prevention is key.

Damping-off: maintain cleanliness, avoid overwatering, use well-draining media, ensure airflow, and use clean trays.
Fungus gnats: reduce surface moisture, apply Bacillus thuringiensis israelensis (Bti) or biological controls to media, and use yellow sticky traps.
Aphids and whiteflies: monitor with sticky traps, introduce beneficials (ladybugs, Encarsia or predatory mites), and consider insecticidal soaps or horticultural oils for targeted control.
Botrytis and powdery mildew: reduce humidity, remove infected tissue, and ensure good spacing.

Sanitation checklist: clean benches, sanitize trays and tools, inspect incoming seed and plugs, and quarantine new stock.

Packaging, pricing, and marketing

Knowing how to present and price your product affects sales and repeat customers.

Packaging formats

Microgreens: 4 oz or 2 oz clamshells sealed for freshness.
Baby greens: 4-6 oz clamshells or 8-12 oz bags for mixed greens.
Herbs: 4-inch pots or bunches tied and wrapped.
Transplants: 6-pack flats, 4-inch pots with tray, or bare-root where appropriate.
Bedding plants: 4-inch pots or hanging baskets sized 8-10″.

Typical retail pricing ranges (adjust to local market)

Microgreens: $3-$6 per 4 oz clamshell; wholesale lower.
Baby greens: $3-$6 per 4-6 oz clamshell.
Herbs in 4-inch pots: $3-$6 each.
6-pack flats: $8-$20 depending on crop and variety.
4-inch bedding plants: $3-$6.
Hanging baskets: $15-$40 depending on size and complexity.

Always survey local markets and competitors to adjust pricing. Offer bundle discounts and pre-orders to boost early-season cash flow.

Marketing strategies

Pre-sell into CSA boxes, farmers markets, and to local restaurants.
Use clear labeling with variety, care instructions (light, watering), and planting suggestions.
Stage attractive displays at markets and garden centers; include sample taste for herbs or microgreens.
Promote local, early, and fresh messaging–“locally grown, available before outdoor season.”

Production planning, labor, and risk management

Plan labor and resources carefully; early-season windows are time-sensitive.

Labor tasks: seeding, transplanting, potting-on, pest scouting, harvest, pack-out, cleaning.
Weekly labor estimate for 1,000 microgreen trays: 20-40 labor-hours per week at harvest peak; adjust with automation for higher volumes.
Backup heating and power options: prepare for cold snaps; lack of heat can ruin crop timing.
Diversify crops to spread market and production risk: combine microgreens (fast), herbs (steady), and pansies (high visual appeal).

Checklist and practical takeaways

Plan backwards from targeted sale dates and set a weekly succession schedule.
Prioritize quick-turn, high-margin crops: microgreens, baby greens, herbs, and bedding pansies.
Maintain strict sanitation and use bottom heat or supplemental lights where needed.
Track yields per tray and set seed orders 10-20% above expected use.
Stage attractive packaging and offer pre-orders to reduce unsold inventory.
Monitor pests early with sticky traps, and use biologicals and cultural controls first.

Early spring greenhouse production in Mississippi is a high-opportunity enterprise when you match crop selection, calendar, and marketing. Start with a focused set of high-value crops, refine your scheduling for steady supply, and invest modestly in environmental control and sanitation. The result: premium prices, loyal customers, and a profitable spring window.