Abundant Bloomsdale
Asteraceae

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Bloomsdale is a savoyed (crinkled) heirloom spinach dating to the 1920s, with decent bolt resistance for a spring variety. Two packets purchased for succession sowing.
Spinach germinates cold (down to 40 degree F) but fails above 75 degree F. Bolting is triggered by both day length (over 14 hours) and heat -- nothing stops it by late June in the PNW.
Direct sow 1/2 inch deep, 9 per sq ft. Keep moist, harvest frequently. Sow spring (now), again in 3 weeks, then stop until late August. Overwintering sow in late August/early September -- plants size up in fall, go dormant under mulch, and explode in March.