Variety field guide
What to expect from Jarrahdale Pumpkin / winter squash Seeds
Jarrahdale Pumpkin / winter squash seeds produce blue pumpkin / winter squash, commonly 8-15 lb, on vining/climbing plants.
Read the complete product descriptionTraits, flavor, garden use, variety notes, and the full catalog record
Jarrahdale Pumpkin / winter squash seeds produce blue pumpkin / winter squash, commonly 8-15 lb, on vining/climbing plants. It is best suited to blue-gray autumn displays, cooking, soup, puree, storage, and gardeners seeking unusual rind color. mildly sweet, smooth flesh suited to roasting, soup, puree, and baking Grow deeply ribbed blue-gray pumpkins with dense orange flesh for the kitchen, storage, and striking autumn displays.
About Jarrahdale
Jarrahdale is an annual pumpkin / winter squash with blue color, 97–120 in mature height or spread, and a vining/climbing habit. Harvest form or size: commonly 8-15 lb. Botanically it is Cucurbita maxima Duchesne. Maturity or first bloom: 110-119 Days; germination: 7-10 Days at 75–90 °F. Best for blue-gray autumn displays, cooking, soup, puree, storage, and gardeners seeking unusual rind color. Mildly sweet, smooth flesh suited to roasting, soup, puree, and baking.
History and provenance
Jarrahdale is an Australian blue-gray Cucurbita maxima pumpkin type valued in gardens and kitchens for ribbed fruit, dense orange flesh, and distinctive color. Exact commercial introduction details should be treated separately from the broader variety type. Botanical record: Cucurbita maxima Duchesne. The broader crop history is kept separate from the documented history of the named variety. Where an exact breeder, introduction date, family story, or cultural attribution cannot be supported by a credible record, repeated claims are not presented as certain. Jarrahdale pumpkin seeds produce flattened, deeply ribbed blue-gray pumpkins with dense orange flesh. The defining kitchen quality is mildly sweet, smooth flesh suited to roasting, soup, puree, and baking. Jarrahdale pumpkin seeds are warm-season seed. Give runners a planned direction so leaves receive air and fruit can rest on a dry surface.
Growing facts
| Scientific name | Cucurbita maxima Duchesne |
|---|---|
| Life cycle | Annual |
| Maturity / first bloom | 110-119 Days |
| Germination | 7-10 Days at 75–90 °F |
| Seed depth | 1 in |
| Plant height / spread | 97–120 in |
| Growth habit | Vining/Climbing |
| Spacing | 48 in between plants; 96 in between rows |
| Sunlight | Full sun |
| Soil | Loamy; pH 6.0–6.5 |
| Water | Moderate |
| Support | No-Support |
Starting Jarrahdale from seed
How to grow Jarrahdale Pumpkin / winter squash
Botanical identity: Cucurbita maxima Duchesne. Life cycle: Annual.
Sow 1 in and use a seed-zone temperature near 75–90 °F. Expected emergence: 7-10 Days. No stratification; direct sow into warm soil or start briefly in biodegradable cells and transplant young
Plant during Late Spring. Space plants 48 in apart with 96 in between rows or planting bands.
Provide Full sun, moderate water, and loamy near pH 6.0–6.5. Support: No-Support.
Garden performance and care
Give Jarrahdale enough room for its vining/climbing growth. Direct irrigation to the soil, keep developing fruit on dry mulch or boards where rot is common, and leave seed-saving fruit on the plant beyond the eating stage. Expected emergence is 7-10 Days; the listed maturity or bloom timing is 110-119 Days.
Harvest, bloom, and uses
Jarrahdale is best for blue-gray autumn displays, cooking, soup, puree, storage, and gardeners seeking unusual rind color. Harvest form or size: commonly 8-15 lb. Color at the principal harvest or mature stage: Blue. Mildly sweet, smooth flesh suited to roasting, soup, puree, and baking.
Saving seed
Seed saving for Jarrahdale Select several healthy, true-to-type plants so the saved lot represents the variety rather than one unusually early or large individual. Squash and gourds are insect-pollinated and cross readily with other varieties of the same species. Confirm the species identified for this crop, then isolate by distance or controlled hand pollination. Mark seed fruit and let it reach full biological maturity; summer squash must become large and hard, winter squash must develop full rind color, and luffa or hard-shell gourds must mature well beyond the edible stage. Cure sound fruit before extraction when the crop benefits from curing. Remove, wash, and dry seed to a hard, storage-ready condition. Maintain several representative plants and record species, population, isolation, fruit selection, curing, cleaning, and test date.
Common problems
Watch Jarrahdale for cucumber beetles, squash bugs where applicable, aphids, powdery or downy mildew, bacterial wilt, crown rot, poor pollination, and fruit damage on wet soil. Rotate cucurbit crops, provide airflow, water at the root zone, protect young plants before flowering, and remove covers when blossoms need pollinators. Do not work wet vines.
Frequently asked questions
When is Jarrahdale ready?
110-119 Days from warm direct sowing or equivalent established transplant
How long does germination take?
Expect 7-10 Days near 75–90 °F; actual emergence changes with moisture, seed condition, and soil temperature.
How large does it grow?
About 97–120 in with a vining/climbing habit. Support: No-Support.
Can it grow in a container?
Best in open ground or a large raised bed; mature vines require substantial horizontal or vertical space.
How is it used?
Primary uses: blue-gray autumn displays, cooking, soup, puree, storage, and gardeners seeking unusual rind color. Mildly sweet, smooth flesh suited to roasting, soup, puree, and baking.
Can I save seed?
Yes where the crop biology allows, but keep compatible varieties isolated, use several healthy plants, wait for full seed maturity, dry thoroughly, and label the lot.
Minimum Seed Count:20 seeds
