I grow a huge number of bedding pelargonium plants – better known as geraniums- for containers in the summer. They flower non-stop from June to November. They are little trouble and all I do is give them some potash liquid fertiliser once a week, and regularly dead-head them
These are tender evergreen perennials and can be kept over winter in a frost free place. This year I have nearly 100 4” pots, full of cuttings which will be kept in my heated greenhouse. This is a space-saving method to keep them from one year to the next. If you don’t have a greenhouse, a bright windowsill indoors is suitable. As long as the cuttings are kept frost-free they will fine. The secret is not to overwater them. In the greenhouse, I only water pots once when the cuttings are taken, and then I don’t water them again until next February when I want to start them back into growth. Cuttings kept indoors in the house will be watered very minimally as the temperatures indoors are higher than in the greenhouse. Full-size plants can carry on flowering all year round if they are brought indoors. Check them for pests and diseases before bringing them in and top the pots with horticultural grit to keep the surface of the compost dry. Wet compost promotes grey mould. Remove any damaged or diseased leaves. When watering, make sure to keep leaves as dry as possible by aiming the water at the base of the plants.
My father in law used to keep his prize-winning pelargoniums in the garage. He dug up his plants in autumn, shook off all the compost, removed all of the leaves and wrapped the remaining stumps and roots in newspaper. They were kept cool, dry and frost free until the spring. I’ve tried this method, but only found it partially successful as my potting shed got damp in winter.
Here’s a blog post I wrote about overwintering my pelargoniums: https://bramblegarden.com/2019/09/15/clearing-out-the-greenhouse-taking-pelargonium-cuttings-sunday-september-15/
Are you planning to keep your pelargoniums over the winter? Or do you sow yours from scratch each spring? Or buy them ready to plant from the garden centre in early summer?
This year I grew all my bedding plants, including some new varieties of pelargonium, from packets of seed. I was amazed how many pelargoniums could be grown from such tiny dust-like seeds. It was a money-saving option that worked out well.
Some more photos from my greenhouse and garden to brighten your day:
A collection of bedding pelargonium plants making a display in the greenhouse.
Common names can be confusing. Most people use the word geranium when they are talking about pelargoniums. But geraniums are a different plant genus. So to avoid confusion, people refer to them as ‘hardy geraniums’ – the sort you grow in beds and borders, as ground cover amongst other plants, and ‘tender geraniums’ (pelargoniums) grown in hanging baskets and containers.
A variety I’ve kept going for more than 20 years, taken from a cutting from my grandfather. It was his favourite pelargonium.
A miniature pelargonium which flowers all year round. This one came from Fibrex Nurseries, a specialist grower, highly recommended. https://www.fibrex.co.uk/. Miniature pelargoniums are wondrous things. I’ll write a new blog post explaining how to grow them. They are easy to grow and once you’ve grown one, you’ll want to start a collection. I warn you, they are addictive!
If you listen in to BBC Radio Leicester, the gardening programme has moved to Saturdays at 11am. Josie Hutchins and I take it in turns to answer phone-in questions and talk about what gardening jobs we are doing each week. If you have a question, please get in touch with The producer, Dale. We are one of the few local stations now offering gardening advice on the radio.