Wildlife in the veg garden

The vegetable garden is in full production, the beds that held garlic, onions and shallots in the first half of the year now contain many varieties of salad leaves and roots that should feed us through next winter.

I've replanted the banks between the two veg terraces with herbs and bee-friendly flowers, and now they are in full flower and alive with flying insects and butterflies. I fear however that they are also harbouring my deadliest enemies, the slugs and snails, as once again a wet summer has ensured they are in plague proportions. Where are the frogs and toads I've tried so hard to attract, with a pond, plenty of cover and choice hibernation sites for overwintering? Next year I plan to raise an aquarium of tadpoles that I'll nurture right up to adulthood, only then releasing them into the garden - we'll see if that helps.