09/21/2025
A friend recently gave us a big cache of expired milk, much of it still unspoiled. As I already mentioned, boiled buttermilk syrup is probably our *favorite* use of old milk and is great for stronger tasting small ruminant milk, much like making caramels.
It's also great for soaking feed for farm animals, particularly if you ferment it to remove the lactose first. But one not often discussed use of milk is as a foliar treatment for vegetable plants. Milk has natural antifungal properties as well as being a much better source of bioavailable calcium, whereas egg shells actually are not, for plants. So its great to apply to both the leaves and root zone of affected plants.
Whereas you want to use something like skim milk for fattening pigs, in the case of plants, whole milk or as close to it as you can get, diluted 1 to 2 parts water, is what you want to use to treat things like powdery mildew and blossom end rot.
Reapply to affected plant leaves every 2-3 days until you see improvement. We loose over half of our cucumber crop to powdery mildew and blossom end rot every year, but I'm hopeful what's left of this year's crop is recoverable. Bottoms up!
A pic of one of our cucumber patches with a fresh milk mustache.