Covers about 3q ft. per gram. This mixture is specially formulated for the climate of Southwest California. Results are particularly colorful. These annual / perennial wild flower mixtures were designed to fit a broad cross-section of conditions that generally exist within a given geographic region. They contain both native and non-native wildflowers. Non-native species were chosen on the basis of their versatility or ability to adapt to various conditions and to provide more balance and color. In this mix you get 25 species of wildflowers. Planting wildflowers is easy! Hardiness zones: 6-9 (-20øC/-5øF, -5øC/25øF) in winter. This mix of wild flowers should grow well where the average temperature during summer is around 88-94øF (31-34øC) during the day and around 70-74øF (21-23øC) at night and usually dry. The rainy season is from late October through March. Do not fertilize wildflowers unless the soil is extremely depleted of nutrients. Fertilizers encourage weed growth and lush foliage rather than flowers. If the soil needs improvement, we suggest adding organic matter such as weed-free grass clippings, well rotted compost or peat moss. The wild flowers need to be watered regularly during the summer to keep the plants at their peak. To aid in natural reseeding and to keep a neat appearance, you can mow the flowers after they have gone to seed and lost their bloom. Mow them at a height of 4-6 inches-mowing below 3 inches could damage the perennial flowers.