Tall plectranthus is part of the Plectranthus genus. Its scientific name is Plectranthus ecklonii.
Plectranthus ecklonii is a soft, erect, fast growing shrub to 3 metres tall. The leaves are arranged in opposite pairs on the square stems, the latter with tufts of purplish hairs along the nodes. The ovate to ellilptical leaves are fairly large 74-190 × 35-115 mm bearing a wedge shaped base and acute apex.
The inflorescence is a terminal panicle to 370 mm long. The two-lipped corolla is 15-24 mm long, bluish-purple, rarely pink or white with a straight tube. Plants flower from March to May with a peak in April. The plant has small nutlets which are 2 mm, black or dark brown. 1
P. ecklonii has a wide distribution from Somerset east in the Eastern Cape to Barberton in Mpumalanga. It is confined to moist coastal subtropical and afrotemperate Forest and forest margins. Rainfall is mainly during summer ranging between 1 000 and 1 750 mm per annum.Tall plectranthus grows as a perennial and is an ornamental. Being a perennial plant, it tends to grow best over several years (approx 3 years and greater). Tall plectranthus normally grows to a shrubby habit.
South Africa is believed to be where Tall plectranthus originates from.
Tall plectranthus is normally fairly low maintenance and is normally quite easy to grow, as long as a level of basic care is provided throughout the year. Being aware of the basic soil, sun and water preferences will result in a happier and healthier plant.
This plant info is provided by the myfolia gardener's wiki. All details about Tall plectranthus have been kindly provided by our members.
In the garden Plectranthus ecklonii is an attractive and popular garden subject. Mass planting of the blue, white and pink cultivars are very striking. P. ecklonii is best grown in partial shade. It is recommended for gardens where frost is not too severe. In colder climates it can be grown as a container house plant indoors. P. ecklonii is a fast growing pioneer shrub and very suited for shady gardens. It will flower profusely the first season after planting. Plant about 60 cm apart. Prune back hard after flowering during midwinter.Plant in a location that enjoys dappled sun and remember to water often. Keep in mind when planting that Tall plectranthus is thought of as half hardy, so it will need cloching or fleece protection when the temperature dips.
See our list of companion Plants for Tall plectranthus to see which plants you should plant in close proximity to encourage growth.
Seeds can be planted in a shallow standard seed tray in standard soil. Cover with a thin layer of sand (1-2 mm) and keep moist. Keep in a shady but well lit environment. Germination is rapid and the seedlings can be planted out in individual bags as soon as they are large enough to handle.
P. ecklonii is easily propagated from cuttings or seed.
Cuttings can be planted like perennial grass ‘in situ’. Cuttings should be about 15-20 cm long, with the top leaves kept. Keep moist and rooting is rapid. Cuttings can also be rooted in sand or other appropriate cutting medium. The best time to take cuttings is spring or summer. Keep them in a shady, but well lit terrain.
These problems, diseases and pests are known to affect Tall plectranthus plants:
Plectranthus pink, Groot spoorsalie