Safe, sweet and strictly a treat
Strawberries sit comfortably on the list of fruits a horse can enjoy. They are soft, fragrant and easy to eat, and most horses take one politely and then look for the next with great optimism. Their place in the diet is the same as any fruit's: a small handful as a reward or a training treat, not a punnet emptied into the feed because the berries were reduced at the shop. The forage stays the meal; the strawberry is the full stop at the end of it.
Wash, hull and halve
A minute of preparation makes strawberries a better treat. Rinse off any soil or spray residue, pull away the green leafy top, and halve the biggest berries so a keen horse cannot bolt one whole. Serve them on a flat, open palm, one at a time: a horse who has to take each berry gently learns better manners than one diving into a pile, and you keep count without thinking about it. Any berry that is soft, bruised dark or showing the first white fuzz of mould goes in the bin, not the bucket — that rule covers the whole punnet, since mould spreads through soft fruit faster than the eye can follow.
Sugar, sticky fingers and visiting treat-givers
Strawberries are not the sweetest fruit in the feed room, but they still carry sugar, which is why the handful stays small — especially for a pony, an easy keeper, or any horse whose grazing you already limit for the sake of his waistline. The bigger management problem is usually people. Strawberries are the treat every child and every visiting grandparent wants to hand over, and a horse can collect six small handfuls from six kind people in one afternoon without anyone realising a limit was passed. Agreeing the number in advance — and making the berries come from one person's hand at a time — solves it more kindly than a sign on the gate.
A summer rule everyone can follow
Introduce strawberries on an unremarkable day, a few at a time, and watch that the droppings stay normal before they become a regular summer reward. A horse meeting soft fruit for the first time may mouth the first berry, drop it, and look offended by the texture; offer the next one halved, with the cut side up and the juice on your palm, and most come round by the third attempt. Frozen berries, incidentally, are best left in the freezer: rock-hard fruit is no kindness to teeth and is harder to chew safely than a fresh berry at field temperature. Home-grown berries from an unsprayed patch are the yard ideal, and if your horse grazes anywhere near a fruit garden, assume he has already found the strawberry bed — the ration he admits to and the ration he eats are not always the same document. The whole strawberry arrangement — washed, hulled, halved if large, a small handful at most — is simple enough for the youngest helper to follow once it is written down, and KinsLe's Family Sharing puts that note on your horse's profile where the whole family can see it, so the rule survives whoever happens to be holding the punnet.