Bulbophyllum sumatranum – 365 days of orchids – day 920

This gorgeous large flowered bulbophyllum arrived in a donation collection a few years ago and has responded well to growing damp and shaded in our Warm Asia section.  Bulbophyllum sumatranum is found  from Thailand through Malaysia to Sumatra, where it grows in wet forests from 900-1500m. The species was relatively recently separated from Bulbophyllum lobbii, […]


Preparing for Sarawak – TZ testing for seed viability

Amongst the techniques we will be sharing with school students in Sarawak in our forthcoming trips (July and October) will be seed viability testing using TZ (2,3,5-Triphenyltetrazolium chloride). Otto demonstrates the first stage – mixing orchid seed with 10% sucrose in a 1.5ml micro-tube. The tube then sits at room temperature for 24 hours. Everyone […]


Angraecum magdalenae – 365 days of orchids – day 917

  Question – Why should you visit the Writhlington Greenhouses in the middle of the night?   Answer – To enjoy the intoxicating scent of the wonderful orchid.  (actually, there is plenty of scent in the day time too) Angraecum magdalenae from the mountains of central Madagascar is one of our most rewarding orchid species. The […]