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Free-draining compost or cactus compostSilver sandNewspaperSheet of glassPencil (to prick out)Seed trayall year round20 minutes to sowFill a broad terracotta pot with a moist, gritty, loam-based compost, such as John Innes. Firm down and make the surface level

outside later. Verbena enjoys full sun, but tolerates dappled shade, and it's worth incorporating some organic matter into the soil before planting. Verbena also benefits from a light feed in spring with a seaweed fertiliser or chicken manure.Sowing seeds

-grown seedlings, spring and early summer is the time to plant them out. Raising them from seed is cheaper but adds a few weeks to the process - so if this is for you, it's time to get sowing!Young brassica plantsGarden line or string and canesTrowelSeed trays

unwanted boxes.If you need more space, hang two or three boxes together.Advice on propagating plantsCarol Klein's video guide to taking basal cuttingsMaking a cloche for seedsSowing seeds indoorsTaking summer cuttingsView a variety of conservatory climbers

on growing summer displaysSowing sunflower seeds, demonstrated by Monty DonSarah Raven gives advice on taking dahlia cuttingsPlants for late-summer colourCreating a daisy window box

to three years. Each clump should have about six leaf shoots and should be replanted about 20-30cm apart and 5cm deep in well-prepared soil.Alternatively, harvest the seeds and store them over winter in cool conditions, then sow them in spring in moist