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 needing space or a strong trellis. Use a Dutch bucket or large container (20 L) with support for the heavy fruits. EC 1.8-2.4 mS/cm. pH 6.0-7.0. Temperature: 20–30°C. High light (DLI 22-30 mol/m2/day). Hand-pollination is needed indoors. Each vine produces 3-5 fruits, and from transplant to harvest runs 80-100 days. Harvest when the skin is hard and uniformly yellow and the stem is brown and dry, then cure at 25–30°C for about 10 days to improve storage. To cook, cut the squash in half, remove the seeds, place cut-side down in a baking dish with a little water, bake at 190°C for 40-50 minutes until a fork pierces the skin easily, then scrape the flesh with a fork to release the spaghetti-like strands. The neutral flavour takes on whatever sauce is added, making it a satisfying low-carb, gluten-free pasta substitute.