euphorbias turning yellow
Hello everyone I do hope someone can advise me.I have recently been given a euphorbia wulfenii to commemorate a wedding anniversary but im upset to say i'm having trouble!
I have noticed that the bottom leaves are turing yellow and are dropping rapidly. by admission i am a complete beginner in the garden but i do know that the soil is alkaline. no one has been able to tell me what feed it needs or when etc not even the gardens where it was purchased!(was a very well known gardens)
I did have a euphorbia portuguese velvet but after three years of no apparant growth the whole plant died and i am at a loss again as to why this is happening. I have always seen these at RHS gardens where they flourish so cant understand why they are not in my garden.I must be doing something wrong but what?
thanks for listening