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Celery (Tall Utah) is the familiar crunchy, ribbed celery of American kitchens — a cool-season vegetable that requires more skill than almost any other garden crop due to its long growing season (100–120 days), constant moisture requirement, and need for gradual blanching to develop the pale color and mild flavor of supermarket celery. Tall Utah produces thick-stalked, upright plants reaching 18–24 inches with genuine crunch and a clean, aromatic celery flavor that home-grown specimens deliver far more intensely than their commercially grown, rapidly irrigated counterparts. Every part of the plant is edible and valuable: the stalks for eating raw or cooking, the leaves as an herb with more concentrated flavor than the stalks, and the seeds for use as a spice. Celery is among the most water-demanding vegetables — it evolved in moist, marshy environments and produces fibrous, bitter stalks if water is ever insufficient.
Start Tall Utah celery seeds indoors 10–12 weeks before last frost — no other common vegetable has as long a required indoor head start. Seeds germinate slowly (14–21 days) and need light to germinate: press seeds onto the surface of seed-starting mix and do not cover. Maintain soil temperature at 70–75°F; cold soil causes slow, erratic germination. Transplant outdoors after last frost when plants are 4–5 inches tall, gradually hardening off over 1–2 weeks. Space 8–10 inches apart in rows 18 inches wide. Celery's most demanding requirement: water, water, water. Never allow the soil to dry out. In dry climates, install drip irrigation before planting. Mulch 3–4 inches deep to retain moisture. Feed every 2–3 weeks with a nitrogen-rich fertilizer; celery is a heavy feeder that directly converts nutrition into stalk thickness. Blanching is optional but produces milder, paler stalks: when plants are 12 inches tall, wrap stems with cardboard or newspaper for 2–3 weeks before harvest to exclude light. Harvest individual outer stalks from the base as needed, or harvest the entire plant by cutting at the soil line. In zones 8–9, celery can be planted in fall for a spring harvest — the cool, moist conditions are ideal.
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