Days to Maturity: Approximately 50-60 days from transplant to first major leaf harvest (leaves can be picked earlier and continuously; flowers appear around 60-70 days).
Sun Needs: Full sun with at least 6-8 hours of direct sunlight daily—essential for strong growth, intense flavor oils, and lush foliage in Utah's sunny conditions (light afternoon shade can help delay bolting in peak summer heat).
Season Type: Cool-season annual; best in early spring (as soon as soil is workable, around 40°F+) or late summer for fall harvest—bolts in prolonged heat above 80-85°F, but Tetra's improved tolerance extends leaf usability in Utah's variable climate.
Plant Habit & Support: Compact, bushy plants 18-30 inches tall and 12-18 inches wide; no support needed—space 8-12 inches apart for good airflow and easy harvesting.
Other Notes: Slow-bolting and vigorous for dill; watch for aphids, spider mites, or fungal issues like powdery mildew—good airflow, avoiding overhead watering, and organic mulch (like straw or compost) help prevent problems; regular harvesting (cut outer leaves or whole stems above a node) promotes bushier growth and delays flowering; excellent for attracting beneficial insects.
Best Planting Method: Transplant when soil is cool and workable in early spring or late summer for fall crops. Space plants 8-12 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: Keep soil consistently moist but not soggy (about 1 inch per week)—even moisture supports tender leaves and delays bolting; drip irrigation or base watering is best in dry Utah conditions to keep foliage dry and reduce disease. Mulch helps hold moisture during warmer spells; containers dry out faster, so check daily, especially in heat, to prevent stress that speeds bolting.
Fertilization Needs: Incorporate compost or balanced organic fertilizer at planting for nutrient-rich soil. Dill is a light to moderate feeder—apply a light nitrogen-rich side-dressing (like compost tea or fish emulsion) midway through the season if growth slows or leaves pale, but avoid excess to prevent soft, pest-prone foliage or accelerated bolting. Harvest outer leaves regularly or cut whole stems at the base to promote bushiness and extend leaf production—frequent picking keeps flavor fresh and delays flowering, often providing usable harvests for 6-10 weeks or more in cooler periods. It's great for containers.