- Biên tập: Dũng Cá Xinh
- Người dịch: Mai Nhung
ENGLISH
Creeping saxifrage (Saxifraga stolonifera) is a perennial that keeps on giving. Plant one out in your garden and before you know it, you will have thousands of them. As a houseplant, it is just as generous but much more controllable— though you’ll still have to watch out for it crawling into bed with its neighbors. This saxifrage has very attractive leaves reminiscent of begonia/geranium foliage, and it grows just like a strawberry, sending out runners in every direction that take root and grow new plant- lets. Plants spread rapidly, forming mats from 6 to 8 inches tall and 12 inches wide. Leaves are nearly round, about 4 inches across, and dark green, with beautiful silver veins and pink to purple-red undersides. Some cultivars have maroon leaves. The starry, delicate, 1-inch-wide flowers are white with tiny pink to red freckles on the three small, pointed upper petals. The two lower petals are four times longer than the upper petals, pure white, and pointed. Flowers appear in May and June and are carried on 2-foot-long stalks in loose, open clusters well above the foliage. Grown in a hanging basket, creeping saxifrage will have lots of red runners cascading down around the sides of the pot. These form new little plantlets at their tips, and the overall effect is lovely. Even in a pot sit- ting on a windowsill, the runners will form little plantlets that sit on the sill all around the feet of the mother plant.
OPTIMUM HOUSEHOLD ENVIRONMENT
Read the Introduction for the specifics of each recommendation.
MEDIUM LIGHT.
This plant does well with dappled or filtered light. Keep it out of direct sun because the foliage burns easily in hot sun.
LOW TEMPERATURE.
Daytime 65 to 75°F, nighttime 55 to 65°F.
MODERATE WATER.
Water whenever the top of the potting medium becomes dry to a depth of 1 inch.
HUMIDITY.
Creeping saxifrage does well with average humidity, but if the air in your home is drier than normal raise the humidity by putting the pot in a saucer or tray of water, making sure the bottom of the pot never sits directly in the water by raising the pot up on pot feet or pebbles.
POTTING MEDIUM.
Use any good organic, well-drained, general-purpose potting soil that incorporates organic fertilizer, mycorrhizal fungi, and other beneficial microbes.
FERTILIZER.
Use any liquid organic fertilizer where the second number (phosphorus) is higher than the other two to promote flowering. Apply at half-strength once a month through the growing season.
POTTING.
This plant grows fast and does not like to be rootbound, so you should probably up-pot or repot it once a year. Up-pot to a container with a diameter 4 inches larger than the current pot.
PROPAGATION.
Creeping saxifrage is easy to propagate by layering the stolons.
COMMON PROBLEMS
Watch for sunburn (page 256), aphids (page 260), and root rot (page 272).