Days to Maturity: Approximately 65-75 days from transplant to first major harvest (leaves ready sooner for picking; continuous with regular cutting).
Sun Needs: Full sun with at least 6-8 hours of direct sunlight daily—essential for lush growth, strong flavor, and oil production in Utah's intense summer light (partial afternoon shade can help if heat causes quick bolting).
Season Type: Warm-season annual; frost-sensitive—transplant only after soil warms to 70°F+ and all frost danger passes (mid to late May in the Salt Lake City area).
Plant Habit & Support: Bushy, upright plants 24-30 inches tall and 10-18 inches wide; no support needed, but pinch tops regularly (when 6-8 inches tall) to encourage branching and bushier growth—space 10-12 inches apart for airflow.
Other Notes: Slow-bolting and vigorous; watch for aphids, slugs, or fungal issues like downy mildew—good airflow, avoiding overhead watering, and organic mulch (like straw or compost) help prevent problems; regular harvesting (pinch leaves or cut stems above a node) promotes more production and delays bolting.
Best Planting Method: Transplant when nights stay above 55-60°F and soil is warm. Space plants 10-12 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 ideal in heavier or alkaline Utah soils to prevent rot and support root health. 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 waterlogged (about 1-1.5 inches per week)—even moisture supports tender leaves and prevents wilting or bolting; drip irrigation or base watering is best in dry Utah air to keep foliage dry and reduce disease risk. Mulch helps maintain steady moisture during hot spells; containers dry out faster, so check daily and water more frequently in summer heat.
Fertilization Needs: Incorporate compost or balanced organic fertilizer at planting for nutrient-rich soil. Basil is a moderate feeder—apply a light side-dressing with a balanced or nitrogen-rich organic option (like compost tea or fish emulsion) every 2-4 weeks to encourage leafy growth, but avoid excess (especially high nitrogen) to prevent reduced flavor intensity or leggy plants. Harvest frequently by pinching or cutting stems just above a set of leaves to promote bushiness and continuous fresh supply—regular picking keeps flavor at its peak and extends the productive season until frost.