Outdoor Girl Tomato - Care Sheet
Overview
The Outdoor Girl Tomato (Solanum lycopersicum 'Outdoor Girl') is a reliable, early-cropping cordon variety perfect for beginner gardeners wanting fresh tomatoes without a greenhouse. This RHS Award of Garden Merit winner thrives outdoors in cooler climates, producing medium-sized, rich red fruits with a tangy, juicy flavour ideal for salads, sandwiches, and sauces. Expect heavy trusses of billiard ball-sized tomatoes (about 1-2 ounces) ripening from mid-July, even in variable UK weather.
Quick Facts
| Scientific name | Solanum lycopersicum 'Outdoor Girl' |
|---|---|
| Common name | Outdoor Girl Tomato |
| Difficulty | Beginner |
| Pet-safe? | No |
| Light | Full sun (6-8+ hours daily) |
| Water | Moist but well-drained; water consistently |
| Humidity | Moderate; good airflow |
| Temperature | 18–29°C / 65–85°F daytime; protect below 10°C / 50°F |
| Soil | Fertile, well-drained loam/clay/sand; pH 6.0–7.0 |
| Fertilizer | High-potash tomato feed every 1-2 weeks |
| Repotting | Once to final pot/container before planting out |
| Propagation | Seed (open-pollinated) |
Light
Position your Outdoor Girl Tomato in full sun, receiving at least 6-8 hours of direct sunlight daily, ideally in a south- or west-facing spot. This variety excels outdoors in sheltered locations, boosting fruit production and flavour. Indoors or under cover, ensure maximum light exposure to prevent leggy growth.
Water
Keep soil moist but well-drained, watering deeply and consistently, especially during dry spells or fruiting. Aim for even moisture to avoid blossom end rot—water at the base in the morning to reduce evaporation and disease risk. In containers, check daily as they dry out faster; reduce watering as plants mature to concentrate flavours.
Humidity
Moderate humidity suits this outdoor champ, with good airflow to prevent fungal issues. In greenhouses, ventilate well during warm spells to avoid high humidity that can yellow fruit tops. Outdoors, its natural setting provides ideal conditions—space plants 45-60 cm apart for circulation.
Temperature
Thrives in daytime temps of 18–29°C / 65–85°F, with nights above 13°C / 55°F. It's bred for cooler summers, tolerating variable UK weather better than most, but protect young plants from frost (harden off from early May). Harvest peaks July-September; high heat over 32°C / 90°F may reduce fruit set—shade cloth helps if needed.
Soil & Potting
Use fertile, well-drained soil like loam, clay, or sand mixes with pH 6.0-7.0 (slightly acidic to neutral). Amend garden beds with compost for nutrients. For pots, choose 10-20 litre containers with drainage holes, filled with multi-purpose compost plus grit. Plant out after frost risk (late May in UK), spacing 45-60 cm apart with stakes for support.
Feeding
Start a high-potash tomato fertilizer (like tomato feed) once flowers appear, applying every 1-2 weeks diluted in water. Avoid excess nitrogen to prevent leafy growth over fruit. Side-dress with compost mid-season for steady nutrients—consistent feeding yields heavier crops of juicy tomatoes.
Repotting
Repot seedlings once to a final large pot or open ground around early May, after potting up in April. Handle gently by leaves to avoid stem damage. No further repotting needed as an annual—focus on staking as it reaches 1-1.5 m / 3-5 ft tall.
Propagation
Sow seeds indoors second week of March in 7-14 cm pots at 18-21°C / 65-70°F, covering lightly. Germination takes 7-14 days. Pot on in April, harden off early May, plant out late May. As open-pollinated, save seeds from ripe fruit for true-to-type plants next year—ferment pulp, dry, and store cool.
Common Problems
Blossom End Rot
Dark, sunken spots on fruit bottoms from uneven watering or calcium lack. Fix: Mulch soil, water consistently, add lime if soil is acidic.
Grey Mould (Botrytis)
Fuzzy grey growth on leaves/fruit in damp conditions. Fix: Improve airflow, prune side shoots, avoid overhead watering; remove affected parts.
Whitefly or Tomato Moth
Sap-sucking pests causing yellow leaves or holes. Fix: Use sticky traps, encourage ladybirds, or insecticidal soap; inspect undersides regularly.
Magnesium Deficiency
Yellowing between leaf veins. Fix: Apply Epsom salts spray (1 tbsp per litre water) every 2 weeks until green-up.
Tomato Spotted Wilt Virus
Bronzed leaves, ring spots. Fix: Remove and destroy infected plants; control thrips with neem; choose resistant varieties next time.
Toxicity & Pet Safety
Not pet-safe. All tomato plants (Solanaceae family) have toxic green parts—leaves, stems, and unripe fruit contain solanine, which can cause vomiting, diarrhea, or worse in pets like dogs and cats. Keep away from curious nibblers; ripe red fruits are safe in moderation.
Seasonal Care
Spring: Sow indoors March, pot on April, harden off May. Summer: Plant out late May, prune side shoots, stake, feed weekly; harvest from mid-July. Autumn: Pick until frost (September-October), pinch tip after 4-7 trusses. Winter: Annual—compost after fruiting or save seeds.
Quick Tips
- Prune side shoots weekly for cordon growth and better airflow.
- Stake early—plants reach 1-1.5 m / 3-5 ft; stop at 4th truss outdoors.
- Let fruits ripen fully on vine for max juiciness and flavour.
- Space 45-60 cm apart in sunniest, sheltered garden spot.
- Harvest regularly to boost ongoing crops.
- Grow with basil or marigolds to deter pests naturally.
- Save seeds from healthiest plants for next season's freebies.