Grow Capsicum annuum 'Spitfire' (Pepper hybrid 'Spitfire') for a bold, spicy pepper harvest on compact plants. You will get the best results when you give it warmth, consistent moisture, and plenty of light, then harvest regularly as fruits size up and ripen.
Choose a site with full sun (at least 6 hours daily) and well-drained soil enriched with organic matter. Set transplants out after danger of frost has passed and nights stay reliably warm; peppers slow down in cool soil. In cold-winter climates, treat it as a warm-season annual, but in frost-free areas it can be grown longer as a tender perennial.
Plants typically reach about 24-30 inches tall and work well in raised beds or large containers. Space plants so air can move through the canopy, and stake or cage if heavy fruiting causes stems to lean.
Water deeply to keep soil evenly moist, especially during flowering and fruit set. Avoid soaking foliage late in the day; drip irrigation and mulch help reduce stress and keep fruits clean. Feed moderately, then side-dress when the first fruits begin to form. Pick peppers at your preferred size and color to encourage continued production.