Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
R
Would be surprised if it's ant making the holes, most likely slugs or snails
S
poor bird and nasty plant…
It's good to use mineral fertilizers ( NPK ) in autumn, when the leaves start falling. Plants need phosphorus and potassium for spring activity.