Thelma Sanders Sweet Potato

Acorn Squash

Zone 2a Save Garden

Botanical illustration of Thelma Sanders Sweet Potato

🌱 70d to harvest Vine

A velvety, sweet-scented harvest with a deep, roasted-squash richness—Thelma Sanders Sweet Potato Acorn Squash brings a warm, gol…

Crop Dates

Milestone	Date
Start Indoors	May 18th
Last Frost	May 25th
Transplant / Sow Outdoors	Jun 1st
Harvest Begins	Aug 10th
Harvest Ends	Aug 29th

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Full Sun
Growth Habit	Vine
Support Needed	Trellis
Planting Depth	Normal
Germination Temp (°F)	80
Min Soil Temp (°F)	65
Min Night Temp (°F)	55
Harden Off (days)	10

Recommended Companions

Moonsong Deep Orange Marigold

Marigold Marigold

Frequently Asked Questions

What pest is most likely to damage Cucurbita pepo (sweet potatoes in the Cucurbitaceae group you’re growing), and how do I control it?

Look for cucumber beetles and their feeding damage (small holes in leaves) along with wilting after feeding. Use floating row cover early after planting, then remove once vines are established; also hand-pick adults in the morning and consider spot-treating with an insecticidal soap if infestations are light. For repeat problems, rotate beds and remove crop debris so beetles can’t overwinter in the same area.

How often should I water during the main growing phase for Cucurbita pepo, and what soil moisture level should I maintain?

During active vine growth, keep the soil evenly moist but not soggy—aim for watering about once or twice per week depending on heat, with deeper soakings rather than frequent sprinkling. The top few inches can dry slightly between waterings, but don’t let the entire root zone dry out, especially once plants start forming storage roots. If you see wilting in the middle of the day, water immediately and then adjust to maintain consistent moisture.

How can I tell when my Cucurbita pepo is ready to harvest (about 70 days)?

Harvest when the vines are starting to yellow and die back and the storage roots have filled out with firm skins. Gently lift a plant to check size; if roots are still small and skins are thin, wait a bit longer. Plan to harvest before hard frosts, and cure the roots in a warm, humid place after harvest to improve sweetness and storage quality.

A velvety, sweet-scented harvest with a deep, roasted-squash richness—Thelma Sanders Sweet Potato Acorn Squash brings a warm, golden-orange interior wrapped in a dark, subtly ridged shell. The flesh is notably fine-grained and tender, with a gently sweet flavor that turns luxuriously silky when cooked, yet still shines when sliced fresh for salads and bowls. Grow it for dependable 70-day results and a centerpiece-worthy acorn shape that looks as good as it tastes in hearty sauces, gratins, and savory spreads.

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

Treat it like a cucurbit: start only if you can keep root disturbance minimal (or direct-sow), and transplant/hill only once nights are reliably warm.