When to sow spring spinach seeds Home › Forums › Edible-Garden Questions › Vegetables & Herbs › When to sow spring spinach seeds This topic contains 0 replies, has 1 voice, and was last updated by Anonymous 8 years, 1 month ago. Viewing 1 post (of 1 total) Author Posts March 17, 2009 at 12:40 pm #28701 Anonymous I’m not sure when exactly spinach seeds should be sown outdoors in Zone 7. Does anyone know? Can I plant now, or do I need to wait until soil temperature warms up to about 60°? I’ve read that bolting is a problem if I wait too long. Thanks for your help! Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.