The African hemp, grown as houseplant only, is a tree-like shrub with heart-shaped, soft leaves and very soft branches.
From winter until spring, flower umbels consisting of about 20 white flowers each start growing at the tip of the branches.
These plants were cultivated in the Royal Botanic Gardens during the 19th century.
The African hemp loves bright locations, must, however, be protected from direct sun. It can also be placed outside during summer.
Permeable standard soil, rich in humus, is an ideal planting substratum. Water a lot during summer and always keep the soil moist. Fertilize weekly with tub plant fertilizer from March to September. Thanks to the rapid growth, the plant can be trimmed down to its desired size.
A bright place with surrounding temperatures of about 10°C during the winter period is ideal (staircase, winter garden etc.). Water sparingly for waterlogging will lead to stem rotting during winter. White flies might occur if the air is too dry. The African hemp starts growing again already in January. The plant will shed its leaves being exposed to temperatures below 10°C – it should then for the most part be kept dry. The African hemp is very sensitive to frost.
Genus - Sparmannia
Species - Africana
Common name - African Linden
Germination rate - 85%
Pre-Treatment - Not-required
Hardiness zones - 3 - 12
Plant type - Houseplant
Vegetation type - Deciduous evergreen
Exposure - Full Sun, Partial Sun
Growth rate - Medium
Soil PH - Acid, neutral
Soil type - Composed and fertile sand and compost
Water requirements - Average
Bloom season - Spring
Leaf / Flower color - Green / White
Seeds can be started indoors throughout the year.
Sprinkle the 3mm small seeds on moist cultivation soil and cover them very thinly with the substratum.
Keep the substratum evenly moist with in temperatures of about +20-25C.
Germination often follows already after 14 to 20 days.
Seedlings can be thinned out two to three months after sprouting.
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