The ever-popular Phlox of the herbaceous border has several dwarf relatives from America which will grace any rock garden. They areand will cover rocks or tumble over walls, bearing masses of 1.5 in. in spring or early summer. These flat floral sheets of white, pink or lavender make a change from the over-used Aubrietia.
VARIETIES: P. subulata (Moss Phlox) is the one you are most likely to be offered. It is a carpeting plant – height 3 in., spread 1Vfc ft.
Flowering period: April-May. There are many named varieties, such as ‘Apple Blossom’ (pink), ‘Temiscaming’ (red) and ‘G. F. Wilson’ (pale purple). P. douglasii (Alpine Phlox) has a similar height and spread, but blooms a little later. Again there are many named varieties, and you can choose from white, pink or lavender.lf you want an unusual varietyplantP.nanaensifolia which spreads to only 6 in.
SITE AND SOIL: Any well-drained, moisture-retentive soil will do – thrives best in full sun.
PROPAGATION: Plantin a cold frame in summer.