Jacobinia : Greenhouse Plants
W – warm, minimum of 13°C (55°F) / T – tropical, minimum of 18°C (65°F)
A colourful group of plants, these are easy to grow and flower but need a fair amount of attention by way of cutting back, propagating and spraying. Jacobinia carnea (J. pohliana or J. velutina) has large heads of pink flowers; J.f. chrysostephana is often seen for sale and has bright orange flowers; J. pauciflora is on a much smaller scale and less upright than the others. Its smaller singly borne flowers are reddish-orange tipped with yellow, J. sub-erecta is another smaller plant which will spread to form a clump if planted into a border. It has downy silver leaves which contrast nicely with the orange-red flowers. As they grow very quickly plants will need renovating regularly. I cut mine hard back to within 2.5 or 5 cm (1 or 2 in) of the base, or if the structure is branching, within a node of older growth. This is best carried out in spring. The resulting new growth can either be grown on or used as cutting material, which roots very quickly. Plants are prone to attack by whitefly.