Sempervivum. There are about 17 species and over 1200 named cultivars. It likes a hot well drained position. The rosettere which flowers will die. Any rosettes which come off are dead east to root. Pests re vine weevil grubs who eat the roots.
Vine weevil adults take semi-circular nibbles from the edges of the leaves. I would be looking for molluscs myself.
Our 40 foot tall Catshead has about half a dozen apples on it this year. Normally we get hundredweights from it. It is a later flowering one so perhaps there are no other pollinating apples around at the right time?
Scab. Not a lot you can do these days, there are no fungicides for amateur use any more.
Still edible if peeled and they will not store.
Mining bee larva. They make a hole, line it with a leaf and lay their egg. It develops over winter and emerges in spring.
Yes, now that you have named then my memory returns. Thanks muchly. This time I will label them and hope the labels stay attached.
Can anyone put a name to these shrubs for me?
Now I would say that it was Sow thistle, Sonchus arvensis. But as said wait until it flowers before deciding.
Mildew, usually associated with dryness at the roots. Try the milk and water spray recommended for fungal infections of plants.
Only ever grown them from my own fresh seed. Kept over winter in a cold greenhouse they germinated well in Spring.