---
title: Luffa Sponge Gourd
created: 2026-05-24
updated: 2026-05-24
type: entity
tags: [fruiting-vegetables, heirloom, open-pollinated, eco-friendly]
sources: [raw/articles/seedvault-home-page.md]
---
# Luffa Sponge Gourd
## Overview
Grow your own biodegradable sponges. Vigorous vine producing fibrous gourds — peel skin after curing to reveal sponge. Also called Vegetable Sponge or Dishcloth Gourd.
- **Category:** Fruiting Vegetables
- **Price:** $3.12
- **Variety Type:** Open-pollinated
## Growing Instructions
### Sowing
Start indoors in peat pots 3-4 weeks before last frost. Soak seeds overnight for faster germination. After last frost in rich soil, full sun. Direct: 70°F soil, 5 seeds/hill, 1" deep, 5' spacing, thin to 1.
### Germination
7-14 days at 75-85°F
### Care
Evenly moist soil. Provide trellis or mulch to keep gourds off soil (soil contact weakens shell, distorts shape, causes rot).
### Harvest
100+ days
## Soil & Conditions
- **pH:** 6.0-7.0, well-drained, warm. Moderate feeder.
## Seed Storage
- **Viability:** 3-5 years cool/dry. Store below 40°F.
- **Pre-treatment:** Soak seeds 24h or nick hard seed coat. Warm soil 70°F+.
## Yield
- **Per Plant:** 8-12 gourds per plant
- **Harvest Season:** Mid-summer through fall
- **Note:** Harvest green for vegetables, cure for sponges
Allow gourds to fully dry on vine (turns brown and papery). Remove seeds from dried shell, dry seeds separately. Store in paper envelope.
## Pest & Disease
Powdery mildew, cucumber beetles, squash bugs. Same family as squash — similar management.
## Harvest & Preservation
Harvest when skin turns brown and papery (not green). Peel skin, rinse fibrous interior, dry completely. Becomes natural sponge.
## Related
- [[seedvault-market]]
- [[grow-guides]]
- [[seed-catalog]]