How to Grow Casper
Cucurbita pepo 'Casper'
Casper is a popular heirloom summer squash variety known for its pale, almost white fruit that resists browning when cut. Gardeners prize this compact plant for its high yield of tender flesh perfect for cooking or fresh eating in salads.
📷 Wikimedia CommonsStarting Casper: indoors or direct sow?
🌾 Sow directly in the garden — Casper is not usually started indoors.
Do not start seeds indoors; instead, direct sow them outdoors only after all danger of frost has passed and soil temperatures are warm enough for germination.
Soil, care & harvest
Prepare your soil to a pH between 6.0 and 7.0, ensuring it is loose and well-draining. As a warm-season crop, you must wait until after the last spring frost when the soil has warmed up before planting outdoors. Sow seeds directly at a depth of about an inch; they typically germinate within seven to fourteen days.
Space plants eighteen to twenty-four inches apart to allow room for their vining habit. Provide consistent moisture as this variety requires high water levels, especially during fruit development. Apply mulch around the base to retain soil temperature and moisture, while feeding regularly with a balanced fertilizer to support vigorous growth.
Watch for flea beetles, aphids, and hornworms; use row covers or hand-picking to manage them early. Prevent fungal issues like powdery mildew by ensuring good air circulation. Harvest the fruit around ninety-five days after sowing when it reaches full size but before the skin hardens completely.
When to Plant Casper
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| Zone 1 | — | July – August | November – August |
| Zone 2 | — | June – August | October – September |
| Zone 3 | April | — | September – October |
| Zone 4 | March – April | — | September – October |
| Zone 5 | March | — | September – October |
| Zone 6 | March | — | August – October |
| Zone 7 | February – March | — | August – October |
| Zone 8 | February | — | July – September |
| Zone 9 | January | — | June – August |
| Zone 10 | January | — | June – August |
| Zone 11 | — | January – March | May – July |
| Zone 12 | — | January – March | May – July |
| Zone 13 | — | January – March | May – July |
Companion Plants for Casper
✓ Good companions
Repels aphids, spider mites, and thrips while potentially improving eggplant flavor
Repels flea beetles, aphids, and ants that commonly attack eggplant
Natural pest deterrent that repels many insects harmful to eggplant
Repel nematodes, aphids, and whiteflies while attracting beneficial predatory insects
Act as trap crops for aphids and cucumber beetles, drawing pests away from eggplant
Repels aphids and provides ground cover while improving soil health
Fellow nightshades with similar soil and water requirements, can deter some common pests
Similar growing requirements and can share support structures, both nightshades with compatible need…
✗ Keep away from
Produces juglone toxin that inhibits nightshade family growth and can kill eggplant
Competes for nutrients and can harbor corn earworms that also attack eggplant
Allelopathic properties inhibit growth of most vegetables including eggplant
Nutrition Facts
Per 100g serving (USDA FoodData Central)
