Grown well, these exhibit a rare verdancy, luxuriance and exoticness. The key is to feed and water enough to get them to grow reasonably fast (left to their own devices, they grow slowly) and, more importantly, remove all leaves that are less than perfect. Anything brown, yellow or spotty must be eliminated. Using a pair of secateurs can be an uncomfortable pastime as the thorns on the leaf stalks are vicious. Either keep your sleeves rolled down or buy some of our heavy duty gauntlets. ‘Humilis‘ means low growing in botanical Latin so they don’t – normally – get much taller than about 6ft but their geographical distribution around their native Mediterranean basin has allowed them to form many different forms over the eons of time.