Days to Maturity: Approximately 40-50 days from transplant (or direct sowing) to full harvest (baby leaves ready in 28-35 days).
Sun Needs: Full sun to partial shade (4-6+ hours of direct sun ideal); in Utah’s hot summers, afternoon shade helps delay bolting and keeps leaves tender.
Season Type: Cool-season crop; best in spring (plant as soon as soil is workable, around 40°F+) and fall (late summer sowing for harvest before hard freezes); tolerates light frosts and can overwinter with protection.
Plant Habit & Support: Upright, vigorous rosettes 8-12 inches tall and wide; no support needed—space 4-6 inches apart for baby greens or 8-12 inches for full plants.
Other Notes: Excellent heat and bolt resistance for a spinach; watch for aphids, leaf miners, slugs, or downy mildew—good airflow, consistent moisture, and organic mulch (like straw or compost) reduce risks; excellent for succession planting every 2-3 weeks.
Best Planting Method: Transplant when soil is cool and workable in early spring or late summer for fall crops. Space plants 4-12 inches apart in rows or beds; plant at the same depth as in the pot. Amend soil with compost for fertility and excellent drainage—raised beds are beneficial in heavier or alkaline Utah soils to avoid waterlogging. Organic mulch (such as straw, compost, or grass clippings) around plants retains moisture, moderates soil temperature, and suppresses weeds.
Watering Needs: Maintain consistently moist soil (about 1-2 inches per week) without sogginess—even moisture prevents bitterness, bolting, or tip burn; drip irrigation or base watering keeps foliage dry in dry Utah conditions. Mulch helps hold moisture during warmer periods; containers dry out faster, so monitor closely for steady supply.
Fertilization Needs: Incorporate compost or balanced organic fertilizer at planting for nutrient-rich soil. Spinach is a moderate feeder—apply a light nitrogen-rich side-dressing (like compost tea or fish emulsion) midway if leaves pale or growth slows, but avoid excess to prevent soft, disease-prone foliage. Harvest outer leaves regularly for cut-and-come-again (promotes regrowth) or cut the whole plant at the base when mature; frequent picking maintains quality and extends the harvest window before bolting.