How much well-rotted manure?
Hi there. Yesterday I bought a small Standard Hibiscus Tree. I shall likely be putting it in a pot so I can take it indoors in Winter if needs be. I'd like to add some well-rotted manure to help it on its way and promote healthy growth but I'm not sure how much manure to add to its planting hole? And should I mix it in with compost, please? Many thanks in advance.