P. gibbosum

Night scented, yellow-green flowers. Glaucous with swollen joints. Grey-green, glabrous leaf. 

Plants are supplied in a 6cm biodegradable pot. There is no need to remove this pot as roots will grow thorough it and the pot, which is made of fibre, will degrade harmlessly into the compost.

This plant has a dormancy period, where by they drop their leaves. Minimum water is required to prevent dehydration.