Garden Phlox 'David' Characteristics
Garden Phlox can be somewhat difficult to grow successfully. Rich and moist soils are advised, as well as full sun for best bloom. The soil must be kept consistently moist, so be sure to regularly water Garden Phlox in times of drought or at the height of summer. A layer of mulch can help to keep the roots cool and maintain consistent soil moisture. Good air circulation is a must, so thinning out the plants if they become crowded is advised. Cut plants to the ground in winter and remove the bulbs from the soil. Deadheading spent flower clusters improves the overall look of the plant, prevents self seeding, and prolongs the blooming season.
Phlox has several disease and insect vulnerabilities. Powdery mildew is common and is best combated by making sure the area around the plants is not crowded, watering at the base, and removing from the soil during winter. Root rot can occur in poorly drained soils. Some insects may make their homes on the leaves and flowers.