Campanula performs best in average, well-drained soil with a neutral pH of 6.0 to 8.0. They are one of the treasures of the gardening world because of their diverse habit and bold flowers. Join. Space your campanula around 40-45 cm (15-18 inches) apart, unless planting in containers where they can be packed in more closely. For generations it has been grown on windowsills and sideboards, its long grey-green stems tumbling down the side of the pot. Taller varieties may need light support. Outdoor Plants – Campanula. Plant size. If you have clump-forming plants (species boasting more than one crown) you can divide these when dormant – again, usually in the autumn or early spring. If you’re planning to grow campanula plants in your yard or greenhouse, it’s important to know how to plant, grow, and care for them. alba, the purple eye and faintest flush of that colour in the white, elevates this into a classy looking perennial.Although upright in growth, I have never needed to stake this plant, and because the clump occupies very little ground space, it can provide very useful vertical accent points among lower-growing perennials. Grow herbs on the windowsill! Baskets are actually the best for these plants since they allow perfect air flow, drainage and you can hang them to allow the plant to trail downwards. Calla Lily, Campanula… They also make great cut flowers, so bring the beauty of your garden inside! There I grow many of the invasive plants from the list (yarrow, bee balm, daisies, day lilies, campanula, irises, hairloom mums, anemones, Lilly of the valley, ferns, etc.) Although they self-seed in some areas, this article will explain other methods of campanula propagation. Plant … This is a great time of the year to clone some of your outside plants or grow them from seed indoors. 1. Attractive and easy to care for, bellflowers are a reliable addition to any garden or outdoor space. Prepare the new planting location by spading the soil to a depth of 8 to 10 inches. Sowing Campanula Seed Indoors: Campanula grows the second year from seed. How to Prune Campanula. This is an outdoor plant in most areas. Canterbury Bells establish easily from flower seed and are best for the sunny areas of your garden. Place the root ball of the Campanula at the correct height in the planting hole. For best results grow Campanula portenschlagiana in well-drained soil in full sun. A seedling from the pure-white Campanula latifolia var. Only if it's a hardy type. This campanula plant can grow up to a foot and they’re one of the most cold-hardy plants. Join Us -Sign up to get all the latest gardening tips! If already grown, plant them outside in the autumn and take cuttings of perennials in the month of spring. Hello, I have just bought A campanula plant but I got it in the houseplant section. H1c - Can be grown outside in the summer (5 - 10) H2 - Tolerant of low temperatures, but not surviving being frozen (1 to 5) H3 - Hardy in coastal and relatively mild parts of the UK (-5 to 1) The Italian Bellflower is one of the best of all summer-flowering trailing plants. Alpine forms must have sharp drainage – add fine horticultural grit and sand to the soil or compost or they will suffer in winter wet. 24 Feb, 2010; Answers. Taking care of campanula. It is also a great place to start if you are new to gardening. Outdoor Plants – Campanula. 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