As part of a project designed to sow ideas, grow inspiration and cultivate futures, 300 London schools are growing their own picnic this summer and their reward could be a £500 voucher from GardenSite.
A herbaceous border is a collection of perennials that are closely grouped to create a dramatic, colourful and structural show. David Coton shares some ideas on how to create a perfect border which will be an eye catching spectacle that will last throughout the summer.
After removing all the weeds and large stones, add a balanced fertilizer and dig in lots of organic matter, manure and compost. Leave it for a couple of weeks to settle down and then level the soil.
This will give you time to choose your plants. Some favourites like campanula, aquilegia, lupins and violas come immediately to mind but the final choice will depend on such considerations as the type of soil and how much sun the bed will receive.
As for the colour scheme, decide whether you want a loud selection of bright colours, relaxing pastel shades or perhaps a pick and mix collection of contrasting colours.
Imagine it as a painting, is it an orange and yellow Van Gogh you're after, an impressionistic Monet or maybe a modernist Hockey. You don't want to have any straight lines but it's probably wise not to be too chaotic, on the other hand who wants to be bland?
Go to a few shows or pinch ideas from your neighbours' gardens, see what looks good and grows well. Jot a plan down on paper or on a computer, moving the elements around to the greatest effect. Avoid planting singly, use blocks of plants for continuity of colour and the greatest impact.
Note flowering times. You don't want half the border in bloom and the other not. So mix plants to have a continuous show all season throughout the border.
Foliage is also important, if you have a plant with rich foliage put it next to one with sparse - some plants with exceptional foliage can be included on that basis alone.
Include a mixture of evergreen and deciduous shrubs. Enliven the senses with textural foliage such as downy lamb's ear and fragrant flowers, decorative stems or bark. Use plants that attract insects and butterflies such as Sedum spectabile.
When you're ready, place out the plants, still in their pots, to see whether they have enough room and you are completely happy with their positioning.
Plant the shrubs first, they need time to establish and herbaceous plants can be moved more easily if you decide they are incorrectly located. Taller plants predictably should be at the back of the border while smaller plants and ground cover are at the front. If there is an fence or rear wall, climbers will provide an attractive backdrop.
In the back row they'll be delphiniums, verbascum, heliopsis and aruncus (goat's beard). In the middle, phlox, peonies, dahlias, rudbeckia and pyrethrum, while at the front can be gaillardia, scabiosa, chrysanthemums and asters.
Bulbs, including corms, rhizomes and tubers, are perfect to fill any gaps. When planting remember that they hate bad drainage, so always plant on a bed of sharp sand or grit. Not all are complete sun worshipers, some summer flowering bulbs like lilies prefer their roots in the shade, so plant them so they grow through low shrubs.
After firming the plants in, give them lots of water and mulch. Continue to water and deadhead over the summer, only the larger ones will need staking and it will be about five years before any need dividing.
New products are the lifeblood of many industries and it’s no different in the gardening sector and most of us above a certain age will know the Rubbermaid brand well, particularly if you have ever been in the cleaning industry.
GLEE is the garden retail industry's annual show at the NEC in Birmingham. David Coton took the opportunity to visit this year's event to catch up on the news, visit current/potential suppliers and evaluate new products we would like to offer on GardenSite in the coming year.
I had never heard of Evika Greenhouses but when I walked into our annual Garden & Leisure Exhibition 2019 (GLEE) it was the only product I really saw. A brand new greenhouse brand is always going to get my attention but the sense that this was not only new, but different, kept my focus.
Although the growing season is slowly coming to an end, David Coton can suggest quite a few jobs that need to be done over the next few weeks, helping you make the most of what's left of summer and preparing for the arrival of autumn.