Calabash

Bottle Gourd

Zone 1a Save Garden

🌱 90d to harvest Vine

A long, elegant bottle gourd with a tender, pale interior and a subtly sweet, fresh flavor that feels like summer on the tongue. …

Crop Dates

Milestone	Date
Start Indoors	Jun 1st
Last Frost	Jun 15th
Transplant / Sow Outdoors	Jun 29th
Harvest Begins	Sep 27th
Harvest Ends	Jul 15th

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Vine
Support Needed	Trellis
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	65
Min Night Temp (°F)	55
Harden Off (days)	10

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Frequently Asked Questions

What pest or disease most commonly affects Lagenaria siceraria (calabash), and how can I control it?

Cucumber beetles and powdery mildew are the most common issues on Lagenaria siceraria. Check weekly for beetles and treat early with an appropriate insecticidal soap or neem when you first see adults, and remove heavily infected leaves showing powdery mildew to slow spread. Improve airflow by training vines upward and avoid wetting foliage, since powdery mildew worsens with humid, stagnant conditions.

How often should I water calabash during the main growing phase (after vines start running)?

During active vine growth and fruit filling, keep soil consistently moist but not waterlogged—water about 1–2 times per week depending on heat and soil type. Use enough water to wet the root zone deeply, then allow the top 1–2 inches of soil to dry slightly before the next watering. Reduce watering once fruits near full size to prevent splitting and to help rind firm up for storage.

How do I know when Lagenaria siceraria (calabash) is ready to harvest?

Harvest at about 90 days, when the calabash rind is fully hardened and cannot be easily dented with a fingernail. The fruit stem should look dry and corky, and the skin should show mature color and dull resistance rather than a glossy, tender surface. Cut with pruners leaving a short stem—don’t pull—then cure in warm, dry air to further harden before use.

A long, elegant bottle gourd with a tender, pale interior and a subtly sweet, fresh flavor that feels like summer on the tongue. Calabash forms smooth, elongated fruits with a refined silhouette and a crisp, juicy texture at maturity—ideal for roasting to bring out gentle caramel notes, simmering into silky sauces, or pickling for bright, tangy bite. Grow it for its showpiece harvest: vigorous vines that reward patience with gourds as beautiful as they are versatile.

Sowing Tips

Transplant Conditions

Wait until soil reaches 65°F and nights stay above 55°F before moving outdoors. Harden off for 10 days first.

Direct Sow Preferred

Sensitive roots — does not transplant well. If starting indoors, use biodegradable pots and disturb roots as little as possible when moving outdoors.

Expert Note

Warm soil matters—wait until nights are reliably warm and the soil is well above 65°F before transplanting to prevent slow, stunted vines.