Passiflora racemosa (red passion flower) is a species of flowering plant in the family Passifloraceae, native to Brazil. It is an evergreen climber growing to 5 m (16 ft), with simple or 3-lobed leaves to 10 cm (4 in) long, and vivid red flowers borne in summer.
Grow passion flowers in full sun, on well-drained soil and fertilize in spring and mid-summer to get the best growth and blooms. Keep the soil moist with mulch. The mulch also can protect the roots in winter in cold areas.
An ideal soil would be made up of 45% minerals (sand, clay, silt), 5 % organic (plant and animal) material, 25% air and 25% water. The mineral portion would be loam (20 – 30% clay, 30 – 50% silt and 30 – 50% sand).
Passion flowers usually don't need much attention to deadheading and pruning. For these plants, pruning should be done in the early spring, before they leaf out. Shear or prune the outer branch tips to shape and reduce the size of the plant. Repeat this pruning technique throughout the summer, as needed. As the plant matures, renewal pruning will be needed.
