The box tree caterpillar, which can completely defoliate plants, originally affected plants in the south east of England, but it is spreading further. Webs on the leaves and greenish-yellow ...

It looks like bird droppings on a leaf, but don't be fooled: it's a caterpillar in disguise. This seemingly innocent creature causes devastation in some agricultural communities, eating young citrus ...

After seven days, the cress will usually have grown at least three centimetres tall and be ready to harvest. Many caterpillars are dull browns and greens, which helps them stay hidden on leaves and ...