On both sides punctual, good communication skills and hard working is required.
experience is good but not essential if you have the right attitude.
On the gardening side, it is weeding, cutting grass, hedgtrimmer work forking  over flower beds etc.
Landscaping side is more physical with use of cutting tools etc, digging out patio areas, a lot of wheelbarrow work, heavier work than gardening.
Most work is carried out in s w london, based in wimbledon.