I recently got into possession these 2 beautiful species. They are large size (ordensis 8cm and derbyensis 4cm across). I have a small terrarium where I grow d. paradoxa and d.petiolaris with great success. (Used to grow there d. kenneallyi too before my parent "took care of it").
The conditions are: 20-25C/night, 30-36C/day. Turbolights-15hours/day. R/O water-tray method (1cm water, replenished when gone). terrarium is covered with plastic foil on the top leaving 1cm gap. Not much air circulation, very high humidity.
I placed the newly acquired plants in there and d.ordensis' leaves started to turn red/brown from old leaved towards the centre and from tips to the heart. D. derbyensis is not doing anything. here are some pics:
Please someone advice me what is wrong? Are they going towards dormancy? I read somewhere that wooly sdews ( I mean petiolaris group with hair on the petioles) do not like high humidity and can be grown outside terrarium? And that they love sandy drier soil and higher temperatures than e.g. paradoxa/petiolaris?
Maybe i should remove them under hot strong lights outside the terrarium with no tray with water just damp soil?
Thanx for your help! :-)