Notches In Leaves

Beetles and weevils damage leaves by biting chunks (notches) out of them. Vine weevils - and sometimes chafer beetles - are a particular nuisance at this time of year.

Vine weevils love to lay eggs in pots of favourite plants. These eggs hatch into white maggot-like grubs with brown heads, which devour fresh white roots and subsequently kill the plants. Although vine weevils have a seasonal life cycle, in practice they can are usually present in some stage of development at all times of year.

CONTROL MEASURES
The adult weevils can get almost anywhere, and can even climb polished glass. So this somewhat limits control measures to surrounding pots with water (weevils can't swim!), greasing sides of pots, trapping adults with upturned seed trays or similar dark vessels (they shelter in them overnight), or chemical control.

Chemical Control
I treat all pots and susceptible plants with thiacloprid. I know it's a carcinogen, but it gives good long-lasting control (several months) and also controls many other pests such as aphids and whitefly. But, most important - it kills vine weevil and chafer grubs.