Surprisingly, perhaps, the Allamanda is not usually considered a climbing plant, but more a bushy shrub. However, the plant is really at its best if allowed to climb and provided with a means of support such as a light frame, a trellis or bamboo canes. Grown in such a way, it will look especially attractive if it is featured in a conservatory or next to a patio window, where it can be exposed to sufficient light. Without occasional trimming or pruning, the Allamanda can easily become rather straggly and untidy. When this happens it may be worth pruning back the growth by a half to two thirds in the latter part of winter before fresh growth starts. A less vigorous and more compact variety is A.c. ‘Grandiflora’.

Plant type : Flowering plant with bushy semi-trailing habit
Season of interest : Summer
Size : 60-250cm (24-98in)
Flower : Trumpet-shaped, formed by five petals, 5-10cm (2-4in) wide, golden-yellow
Leaf : Oval, 7.5-12.5cm (3-5in) long, dark green
Temperature : 18-2TC (64 — 70°F)
Aspect/Light : Well-lit situation, without too much direct sun
Humidity : High
Watering : Evenly moisten compost in spring and summer, allowing to dry just a little before re-watering; keep on drier side in autumn and winter
Feeding : Once every three to four weeks with flowering plant fertilizer in spring and summer
Propagation : Plant 7.5-10cm (3-4in) tip cuttings in seed and cutting compost at 21 -22'C (70—72°F) in mid spring to early summer
Potting : Houseplant and potting compost
Problems : Aphid, red spider mite
Availability : Occasionally available in early summer
Uses indoors : Floor-standing plant next to patio window or in conservatory, climbing through trellis or similar support
Other varieties : A.c. 'Grandiflora' - more compact habit