Spaghetti squash
Cucurbita pepo
Also known asVegetable spaghetti · Squaghetti · Noodle squash
Environment
The bounded range this crop tolerates.
Climate and zones
- USDA zones
- 3–12 (winter low around -40°C)
- Frost
- frost sensitive (dies at first frost)
- Season
- warm (summer, frost-sensitive)
Growing systems
Root mass: heavy. Thin-channel systems can't hold this crop.
Growing media
| Medium | pH effect | Retention | Bacterial surface |
|---|---|---|---|
| Soil-based mix (Potting soil) | varies | high | high |
Nutrient demand by stage
NPK ratios are relative weights. EC targets shift through the plant's life.
| Stage | N | P | K | EC (mS/cm) |
|---|---|---|---|---|
| seedling | 2 | 1 | 1 | 1.2 |
| vegetative | 3 | 1 | 2 | 1.8 |
| flowering | 1 | 2 | 3 | 2 |
| fruiting | 1 | 2 | 3 | 2.2 |
Companion-growing notes
- Heavy uptake of potassium, nitrogen. Co-grown crops with the same demand will end up deficient even at "correct" EC.
- High transpiration. Regular reservoir top-ups needed during fruiting.
Aquaponics suitability
Compatible
Fish waste provides enough nitrogen for healthy growth. Supplemental potassium, calcium, and iron may still be needed depending on fish stocking density.
Care notes
A sprawling vine crop requiring space or strong trellis. Dutch bucket or large container (20 L) with support for the heavy fruits. EC 2.0-3.5 mS/cm. pH 5.5-6.8. Temperature: 20–30°C. High light (DLI 20-30 mol/m2/day). Hand-pollination required indoors. Each vine produces 3-5 fruits. From transplant to harvest: 80-100 days. Harvest when the skin is hard and uniformly yellow and the stem is brown and dry. Cure at 25–30°C for 10 days to improve storage life. To cook: cut in half lengthwise, remove seeds, place cut-side down in a baking dish with a little water, bake at 190°C for 40-50 minutes until a fork easily pierces the skin, then scrape the flesh with a fork to produce the spaghetti-like strands. The neutral flavor means it takes on whatever sauce you add. For low-carb and gluten-free diets, spaghetti squash provides a genuine, satisfying pasta substitute.