I've done a quite a number of landscape systems over the years. For the aspect of the speakers, the best performing and most rugged I have ever dealt with are from Near and James Loudspeaker. Those two are some truly fine speaker offerings.
The LB and the NearScape systems are great. Fantastic sound and great looks. The Near systems are definitely a notch or two above the offerings from Sonance, Episode, ML, etc.
https://www.jamesloudspeaker.com/categories/40
The James gear is truly customizable to what ever you want. You want Ferrari red satellites? They will do it for you. Everything is built out of aluminum, no plastic parts.You need (4), 21" in-ground bandpass subwoofers? No problem.
I'd go with the smaller satellites all around rather than the larger, 6" models, unless you have a huge yard. The smaller satellites with subwoofer(s) look better and don't draw attention to themselves, either.
For control and sources, a Sonos Port with proper amplification could be an easy way to go. If you have a control system for the home already, such as Elan, Control4, Savant, etc., then you would need to bring in the landscape systems amplification control into the control systems umbrella.
What is the approx. size of the area you are trying to cover for sound? Is there also a patio area that would need sound? Is there a pool/ hot tub? Do you have an idea on what to budget for this project?