Container Plants

Trees & Shrubs

August – Lawns

  • Continue to mow regularly
  • Apply selective weedkiller to established lawns
  • Sow lawn seed for new lawns ensuring it is protected from birds by netting
  • Remember different blends are available for fine or rough, sun or shade
  • You can also lay new lawns from turf, more expensive but will give an instant lawn.  

August – Container Plants

  • Water plants daily and feed weekly
  • Remove any plants that are no longer looking their best
  • Shrubs that have finished their flowering can be pruned to shape
  • Annuals can be deadheaded and trailing plants pinched back
  • Plan ahead for winter and spring displays

August – Trees & Shrubs

  • Prune shrubs that have finished flowering, thinning out old wood and shortening stems
  • Remove dead branches from trees and evergreen shrubs
  • Clip beech and yew hedges
  • Continue to water and mulch newly planted shrubs and trees
  • Prune wisterias by pinching out young shoots beyond three or four leaves

HTA Plant of the Moment – August

© Adam Pasco Media

Ornamental grasses offer great value, and these popular Plants of the Moment produce long-lasting displays in any garden. Large individuals have a real presence, taking pride of place in beds and borders, while colourful planting combinations can be created with flowering perennials like Black-eyed Susan, Coneflowers and Ice Plants.

Top four Ornamental Grasses

Many great grasses are available that have received an Award of Garden Merit (AGM) from the Royal Horticultural Society. Here are some of the most popular:
Festuca – such as Blue Fescue Grass (Festuca glauca ‘Elijah Blue’)
Pennisetum – such as Fountain Grass (Pennisetum setaceum ‘Summer Samba’)
Miscanthus – such as Zebra Grass (Miscanthus sinensis ‘Zebrinus’)
Stipa – such as Giant Golden Oats (Stipa gigantea)


Top tips for planning and planting

1. Be generous and plant grasses in drifts or bold groups rather than as lonely individuals.
2. Some large potted grasses can be divided into two or three pieces at planting time, each with roots and shoots attached.
3. Grasses grow well in patio pots, but make sure tall varieties are planted in large, heavy pots to prevent them blowing over in strong winds.
4. Line terracotta pots with plastic from old compost bags to help conserve moisture.
5. The tops of some perennial, like miscanthus, die over winter. Promptly cut away all old growth to avoid damaging new shoots that start emerging in early spring.
6. Many ornamental grasses can be raised from seed. Annual grasses like Bunny Tails (Lagurus ovatus), Greater Quaking Grass (Briza maxima), Feathertop (Pennisetum villosum), Purple Millet (Pennisetum ‘Purple Majesty’), and Squirrel Tail Grass (Hordeum jubatum) as well as perennial grasses like Stipa tenuissima can be grown from spring sown seeds.

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