About Mountain Phlox: On one of his many mid-nineteenth century expeditions through the American West, botanist Edward Lee Greene discovered and recorded this native plant. Greene became known for cataloguing over 4,400 species of native plants. The genus name Linanthus means “flax flower,” while the species name “grandiflorus” means “large-flowered.”
Mountain Phlox Germination: Direct sow in fall for the earliest blooms, or after the last spring frost for early summer bloom. Plant more every several weeks for continuous flowers. These plants can also be started indoors in peat pots; sow just below the surface of the soil, keeping it evenly moist and at a temperature of 65-70 degrees F. Germination usually occurs within 15-20 days. Transplant outdoors as soon as they can safely be handled and there is no chance of frost.
Growing Mountain Phlox Seeds: Keep the soil moist but not soggy. This plant self-seeds freely, but can be cut back after blooming to prevent spreading. This plant makes an excellent ground cover or border plant, and attracts bees and butterflies.
Harvesting Mountain Phlox: These blooms make excellent cut flowers. Choose stalks with flowers that have just opened and place them in water immediately; strip the foliage that will fall below the surface of the water.
Saving Mountain Phlox Seeds: After blooming, this plant will produce seed heads that eventually release their seeds. Watch the heads carefully and gather the seed as soon as it has ripened. Store in a cool, dry place.
Detailed Mountain Phlox Info: Origin: US Native Wildflower Other Common Names: Large-Flower Lianthus, California Phlox Duration: Annual Bloom Time: Summer Height: 12-18 inches Spacing: 12-15 inches Light: Full Sun to Part Shade Soil Moisture: Medium to Dry USDA Zone: 3a-10b Seeds Per Oz: 60,000 Produces a low, fragrant plant with pale lavender, white, or pale pink flowers.