Plant selection
You should try to choose the right plants for the environment:
- Plants with benefits to wildlife
- Plants that will enhance the appearance of the street
- Plants that minimise competition for water and nutrients with the existing trees.
You should also choose the right plants for the growing conditions:
- Robust, drought-tolerant species
- Plants that can survive soil conditions with low nutrient levels are likely to be more successful than more tender plants.
- If planting is intended in tree pits containing mature trees, shade-tolerant species are more likely to be successful.
Avoid climbing plants and shrubs, as they can create competition for water resources with existing trees. Climbers can also prevent us from assessing the condition and safety of the trees.
Instead, try to use wildflower seeds, bulbs, annuals and perennials
Plants with a compact growing habit are a better choice than tall or wide-spreading specimens, so that the ultimate height and spread of the plants do not cause obstructions to the footway or highway.
Wildflower seeds are an inexpensive option and are easy to grow. Seeding with a wildflower mix has the benefit of encouraging insect pollinators, and the plants are less vulnerable to theft or damage than more showy plants. Seeds are best planted in early spring.
Bulbs and corms such as snowdrops, small daffodils and narcissi and cyclamens are best planted in the autumn.
Bedding plants such as marigolds and geraniums, and perennials such a small periwinkle and salvia can create a colourful display. Unfortunately, these plants tend to be more vulnerable to theft or vandalism.
Using seeds, plug plants or plants sold in small pots is advisable, in order to limit the amount of excavation needed, and so avoid damage to tree roots.
Make sure to read all of the specifications and planting instructions on the seed or plant packaging before planting in a tree pit.