Make a list of what’s most crucial to care for. Account for your vegetable beds as well as your houseplants, and your lawn as well as your landscaping.
Most people really do not mind taking care of your garden, especially if you ply them with fresh vegetables or offer to return the favor if they have gardens of their own.
Sometimes you can find one for free through various house-sitting sites. These people are usually retirees, freelancers, or digital nomads who exchange house-sitting for accommodations while they’re traveling.
Sometimes, you can even make a little money by renting your home to a traveler who appreciates having a garden. Put it out to friends and family a couple of months before your trip, and see if anyone has referrals for you.
If you have a lot of friends from outside the area, offer a home swap—they can live in (and help take care of) your home while you’re on vacation, and you can stay in theirs while they’re away. It’s a win-win!