Can apple and rhubarb co-exist?
I am going to replace the worn out rhubarb this autumn and create a new bed in the old comfrey patch. This will be 14 feet x seven feet, well drained and south facing. The displaced comfrey are moving to a new border. The soil is very fertile having been devoted to comfrey for 20 years and is crumbly and rich in humus. I would like to plant four rhubarb crowns at 30 inch centres and two apple trees at the back of the bed as cordons grown as an apple hedge. Would I need to build a raised bed for the apples to raise them above the rhubarb, or would that be unnecessary? Will the Rhubarb and Apple get along alright together?