DIASCIA

DIASCIA

Diascias belong to a genus of plants recently introduced in Italian nurseries that are used for borders, vases, for the composition of flower pots, or in rock gardens. They are native to South Africa and belong to the Scrophulariaceae family as do Buddleias and Calceolarias. They are trailers, with small branches that reach 20 or 30 cm in length. The colour of the flowers varies from yellow to orange and from white to violet. They require moist, well-drained soil and it is important to create a substratum that does not retain too much water by adding sand or perlite. They are lush plants: if placed in the right location and cleared of withered flowers, there will be repeat flowering from June to late October. Diascias are tolerant to cold spells and, if placed in sites where there is no waterlogging, they can resist harsh winters with temperatures reaching even -10°C. The plants must be placed in full sun or in part-shade, always ensuring frequent watering. They must be fed every 20-30 days with a 20-20-20 ternary fertilizer dissolved in irrigation water. They are hardy plants and treatment of parasites can be limited to warding off aphids, mealybugs, and whiteflies. Diascias are easily propagated from stem cuttings. To reproduce a diascia, detach a piece of branch and plant it in a vase filled with an equal mix of peat and sand. Wet the compost and plant 2 or 3 cm of the branch, leaving the same length above ground. Place the vase in the shade and spray with water twice a day. In a week’s time, the new rootlets will begin to grow.

pianta da fiore diascia