Callistemon213
If he loves the garden, could you persuade him to join the National Trust or other organisation where you could visit lovely gardens? Even if you aren't interested, there is usually a property to look round and/or a lunch or cream tea to look forward to.
More locally there might be gardens open under the National Garden Scheme.
Or is he too miserly for even that?
The main thing is - talk to him!
Very wise words.


. You have differing interests, no doubt and a different vision of retirement years. Give him what he wants and give yourself what you want. ( A + B = 2semi-content retirees).
GN can help you with perspectives but cannot answer the personal question that you have silently asked).