Wonder it gardening includes lawns and lawncare,planter construction, landscape, planting and pruning trees, plotting out orchards and such.
Still — landscaping, lawnmowing, farming, etc. are hardly “hobbies”. They’re either occupations or household chores. Calling “gardening” a manly hobby when referring to landscaping is like calling dishwashing a womanly hobby.
And, if they’re referring to “gardening” in the traditional hobby sense of the word — it ain’t manly.
SnakeDoc