Many flowers are now imported so are available all year round but if you'd like to include seasonal blooms in your wedding flowers you may like to consider our choice for Summer weddings below:
Alchemilla Mollis, Astrantia, Beech, Calla Lily, Continus, Cornflowers, Cosmos, Cotton Lavender, Dahlias, Delphinium, Eucalyptus, Foxgloves, Gladioli, Honeysuckle, Hydrangea , Ivy, Jasmine Trails, Lavender, Lilies, Marigolds, Mint, Oregano, Peony, Pheasant Bush, Phlox, Rosemary, Rubus Trails, Sages, Scabious, Scented Garden Roses, Scented Geranium, Scented Pinks, Senecio, Snapdragons, Sunflowers, Sweet Peas, Sweet Williams, Thyme
Source: http://www.myweddingflowerideas.co.uk/summer-wedding-flowers.html