I have various perennial Geraniums in my borders. This year my favourites, variety unknown, but a lovely purple, have been attacked by a pest. They apppear to be eating the leaves and leave them looking like a lace doily. Help please.
This often happens to my geranium Johnson's Blue but not usually the others and I grow at elast a dozen different geraniums. The thing to do is to cut the entire plant back to about 2 or 3 inches high, scatter on some blood, fish and bone or pelleted chicken manure. Water if it doesn't rain.
They'll grow back fine, healthy new foliage in about 3 weeks and you may even get another flush of flowers.
My Johnson's blue geranium borders the length of my slate path and this evening I noticed the leaves having been eaten in strips, exactly like a lace doily as Sam F- N said. We cut them back three weeks ago and there was a lot of new growth and fresh flowers beginning to grow but now they look sad. I am an organic gardener so I'll try the soap spray first.Thanks.
Geraniums are suprisingly hardy. As obelixx said - chop, and they'll grow again. I had an abundance of a x oxonianum (pale pink flowers) and I could chop them twice during the growing year to keep the foliage fresh. They blights can be so hardly that when lifting (to reposition, say) yoiu could leave a ready-made root cutting and it'l pop its head up again.
Soap spray will affect all insects - friendly and not-so-friendly alike. It may be 'organic', but it isn't selective. Spraying when pollinators are not around is a good idea.
I have one of these beauties, got it from coblands two year ago, it was a sea of deep blue all last summer, now after the winter its a little pile of straw. I tried to take cuttings last autumn but it didn't work. Now I am thinking of dividing but I am a bit scared to harm it as its the only one I have, all others are pink (different variety).
I love hardy geraniums especially with roses. The first plant I grew as a child was a Geranium Johnson's Blue. I now have several varieties and think I'm addicted. A great plant for beginners. Mine didn't die back this winter. Should I cut them back now or wait until April?
Is it a Bill Wallis, very big plant with lots of purple flowers?, There was a thread on here before that I posted on. If it is like that then you can divide it no worries
Mine could be a Bill Wallis as its pretty big, with dark divided leaves and lots of purple flowers, but I got it from Coblands as John's Blue, is that a sub division? I am confused now..
I love hardy geraniums