philodendron black jack Cyrtosperma johnstonii 'Black Jack' – Conservatory Archives

philodendron black jack Cyrtosperma johnstonii 'Black Jack' – Conservatory ArchivesThe foliage of Cyrtosperma johnstonii, also known as Alocasia Black Jack, is completely enticing. Bright green leaves are slightly textured, while deep red venation makes for a rather atmospheric look, sitting atop dark stripy stems. WATERING In S S water when 20% of the top soil has dried out. In A W allow top soil to dry out 70%. LIGHT REQUIREMENTS Bright, indirect. FEED Use a houseplant fertiliser every 2 4 weeks from April October. REPOTTING Repot

The foliage of Cyrtosperma johnstonii, also known as Alocasia ‘Black Jack’, is completely enticing. Bright green leaves are slightly textured, while deep red venation makes for a rather atmospheric look, sitting atop dark stripy stems.

WATERING

In S/S water when 20% of the top soil has dried out. In A/W allow top soil to dry out 70%.

LIGHT REQUIREMENTS

Bright, indirect. 

FEED

Use a houseplant fertiliser every 2 - 4 weeks from April - October.

REPOTTING

Repot roughly every 1-1.5 years. Use a well draining house plant compost with added draining medium like perlite.

POT SIZE / HEIGHT

See available sizes below. Please note that, due to their natural variability, specimens' height may be within 10-20% of the stated height below. 

Plant is supplied in its plastic nursery pot.