Posted: 28/03/2017 at 20:11
It not essential to have qualifications, in fact Monty Don is very open about the fact he has no formal qualifications but he is quick to point out that he has studied a great deal just not on formal courses & never taken an exam.
I was thinking even if you just looked at the syllabuses to see what they covered it might give you some ideas about what you need to think about.
P.S. Capel is unusual in that the RHS courses come under the department of design, but there is very little about design or hard landscaping until you get to level 3.