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and cuttings if you can enclose a small volume of air around their pots and trays, using a covered propagator. An electric heated propagator or mat will increase the speed of germination and rooting. Prices start at under £5 for an unheated propagator

Hi folks, I have used an unheated propagator in the past and managed to raise a few plants here and there. I have just bought a heat mat and today I planted 5 desert rose seeds into some of those little jiffy pod thingymabobs, placed them in a

. Brian As most Osteospermums can only be considered half hardy, it's always best to propagate new plants by taking cuttings each year. This is preferable to over-wintering large plants.

Pot up rooted cuttings and young plants that have outgrown their potsSow seeds of marrows, courgettes, squashes, cucumbers and melons in a heated propagatorWater pots and trays of seedlings with a solution of copper fungicide to prevent damping

floweringSow summer bedding, such as begonias, verbena, lobelia, ageratum, pansy, viola and antirrhinumCrops to sow in heated propagators include tomatoes, aubergines, onions, celery and peppers

Hand pollinate the flowers of peaches and nectarine, with a soft brushCut off hippeastrum flower heads, leaving the stalkSow summer-bedding plants in trays in a heated propagator or in the greenhousePlant dahlia tubers in trays to encourage shoots

lot easier to propagate by corms.  If you still want to sow them, they need 60 degree heat and will take up to 90 days to germinate.

.gardenersworld.com/how-to/projects/propagating/how-to-take-rose-cuttings/285.html

a heated propagator). Water sparingly now, but increase doses as the plants start to grow. They should flower from June to August. Kate Thank you Kate

Insulate a coldframe using polystyrene sheeting, with help from Monty Don.autumnMore advice on propagating plantsHow to take root cuttingsCarol Klein's video guide to taking basal cuttingsSarah Raven gives advice on taking dahlia cuttings