Rhs week 31 2014 presentation

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use of annuals in design

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Rhs week 31 2014 presentation

  1. 1. RHS Week 30 Hardy and Half Hardy Annuals and Container plants in design
  2. 2. Learning objectives 1. State the purpose and use of hardy annuals in garden design 2. State the purpose and use of half-hardy plants in garden design 3. State the purpose and use of patio or basket plants in garden design For each of the plant types listed above : 4. name Five, suitable for planting in a variety of garden situations. State details of their decorative merits, height and spread and site requirements; describe a situation where each could be used effectively
  3. 3. Use of Hardy Annuals in Design  Cold/frost resistant – grow, mature, flower and die in one year. Usually sown where they are to flower – bedding annuals can be grown in pots for later planting out.  Provide good colour and interest but only for late spring and summer  Annual only beds therefore over by the frosts – lack year round interest  Can also be used in patches or drifts in mixed borders or sown in containers.  Enable changed colour schemes to be used each year.
  4. 4. Hardy Annuals  Lobularia maritima  Iberis umbellata
  5. 5. Hardy annuals  Helianthus annuus  Tropeaolum majus
  6. 6. Hardy annuals  Clarkia elegans  Matthiola incana
  7. 7. Hardy Annuals  Lathyrus odoratus  Calendula officinalis
  8. 8. Hardy annuals  Papaver rhoeas ‘Shirley series’  Rudbeckia hirta
  9. 9. Half hardy and tender annuals in design  Not cold tolerant so started under glass with heat.  Some are botanically perennials but grown as annuals due to lack of cold tolerance  Useful as they can be bedded out either in bedding displays or as drifts in mixed borders and come into flower relatively quickly after planting out.  Classic bedding schemes are replanted two or three times a year – high labour and planning  When used to provide variety among permanent planting they are less hard work.
  10. 10. Half- hardy and tender annuals and bedding plants Impatiens walleriana Nicotiana x sanderae
  11. 11. Half- hardy and tender annuals and bedding plants Salvia splendens Tagetes patula
  12. 12. Half- hardy and tender annuals and bedding plants Begonia semperflorens Cleome spinosa
  13. 13. Half- hardy and tender annuals and bedding plants Heliotropum arborescens Pelargonium x hortorum
  14. 14. Half- hardy and tender annuals and bedding plants Petunia x hybrida Phlox drummondii
  15. 15. Containers and baskets in design  Can be easily changed for seasonal interest.  Baskets give good vertical interest.  Can be used where other planting is not possible – window boxes, paved areas etc.  Containers can be used to grow tender plants that can then be protected over winter.  Not all container plants are annual or temporary. Large containers can be used for perennials that can be under planted with annuals for a changing display.  Good for adding winter interest close to the house – on a patio visible from a window etc.
  16. 16. Summer plants for containers Lobelia erinus ‘Monsoon’ Fuchsia ‘Swingtime’ Photo: John Keogh (attribution, non-commercial)
  17. 17. Summer containers Impatiens walleriana Begonia semperflorens
  18. 18. Summer containers Pelargonium x hortorum Tagetes patula
  19. 19. Summer containers Verbena x hybrida Note that ‘Aztec Silver’ is pink/white. Cuphea ignea
  20. 20. Winter Containers Viola x wittrockiana Hedera helix ‘Spetchley’
  21. 21. Winter Containers Skimmia japonica Heuchera
  22. 22. Winter Containers Polypodium vulgare Cyclamen coum
  23. 23. Winter containers Carex comans ‘Bronco’ Iris ‘Katharine Hodgkin’ Photo: Rogerio Liria
  24. 24. Winter Containers Helichrysum italicum Brassica oloracea (Capita group) ‘Northern Lights’
  25. 25. Learning outcomes 1. State the purpose and use of hardy annuals in garden design 2. State the purpose and use of half-hardy plants in garden design 3. State the purpose and use of patio or basket plants in garden design For each of the plant types listed above : 4. name Five, suitable for planting in a variety of garden situations. State details of their decorative merits, height and spread and site requirements; describe a situation where each could be used effectively

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