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Waltham Butternut Squash (90 Days)

A relative newcomer amongst winter squash, Butternut was introduced in 1944, although the breeding material, Winter Crookneck, dates back to the 19th century. Vines run 6-7’ in length and yields of 2-3 pound squash are good, but quite late. 

15 seeds

Waltham Butternut Squash (90 Days)



Cucurbita moschata

Germination: 7-10 days

Germination Temperature: Optimum soil temperatures 70-85ºF

Seed Sowing Depth: 1/2-1" deep

Sowing Indoors: 3-4 weeks before the last frost. Provide 70-85ºF soil temperature. Sow 2-3 seeds per cell/pot. Sowing into individual biodegradable peat/cow pots reduces root damage when transplanting. Transplant after last frost, 36-48" apart. 

Sowing Outdoors: Sow after the last frost when the soil temperature is over 70ºF. Sow a few seeds every 36-48". 

How much does a packet plant: 12-15 foot single row, 3-5 hills

Harvest: Before heavy frost. Determine ripeness when the skin has turned color and becomes dull dry. You will be unable to create a dent when pressing your thumbnail into it. Leave two inches of the stem on the squash and manage carefully so there is no damage that can shorten storage life. Cure for 7-10 days in the sun to harden the rind and increase storage quality. Wipe any debris off the skin before storing it in a cool dark place with 50-55ºF temperatures and 50-65% humidity.

Tips: Plant in fertile soil, amended with compost or well-rotted manure, and keep well watered. They benefit from growing on black plastic and by using row covers for weed, insect control, and more rapid growth.


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Howard L.
United States United States
I recommend this product


The germination was very good. We had a perennial flower business and you were our main seed supply for 30 years or more. I recommend your seed often. Keep up the good work.

Anne M.
United States United States
I recommend this product

Beautiful Butternut Squash

The seeds sprouted well, and with time became long and healthy vines that are producing squash that are a good size and seem very healthy. Best squash I've grown so far.

brandon d.
United States United States
I recommend this product

Kickin it root down

My overall experience with Pinetree seeds has been amazing..Ive been purchasing seeds from them for over 5 years. Their heirloom varieties have never let me down,seeds have all been viable and the produce has been delicious. Their pricing, prompt delivery and customer service has exceeded expectations..Thank you Pinetree!


Pinetree Garden Seeds

Hi Brandon, Thank you for the wonderful feedback and kind words! ~Tammy

Jay K.

Family Favorite

This is my go to squash! We refer to these as Betty's Butternuts because my mother-in-law likes them so much. I keep trying other types but this is still the best.