rhs week 31 2014 presentation
DESCRIPTION
use of annuals in designTRANSCRIPT
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RHS Week 30
Hardy and Half Hardy Annuals and Container plants in design
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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
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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.
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Hardy Annuals
Lobularia maritima
Iberis umbellata
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Hardy annuals
Helianthus annuus
Tropeaolum majus
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Hardy annuals
Clarkia elegans
Matthiola incana
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Hardy Annuals
Lathyrus odoratus
Calendula officinalis
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Hardy annuals
Papaver rhoeas ‘Shirley series’
Rudbeckia hirta
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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.
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Half- hardy and tender annuals and bedding plants
Impatiens walleriana Nicotiana x sanderae
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Half- hardy and tender annuals and bedding plants
Salvia splendens Tagetes patula
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Half- hardy and tender annuals and bedding plants
Begonia semperflorens Cleome spinosa
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Half- hardy and tender annuals and bedding plants
Heliotropum arborescens Pelargonium x hortorum
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Half- hardy and tender annuals and bedding plants
Petunia x hybrida Phlox drummondii
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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.
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Summer plants for containers
Lobelia erinus ‘Monsoon’
Fuchsia ‘Swingtime’ Photo: John Keogh
(attribution, non-commercial)
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Summer containers
Impatiens walleriana Begonia semperflorens
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Summer containers
Pelargonium x hortorum Tagetes patula
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Summer containers
Verbena x hybridaNote that ‘Aztec Silver’ is pink/white.
Cuphea ignea
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Winter Containers
Viola x wittrockiana Hedera helix ‘Spetchley’
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Winter Containers
Skimmia japonica Heuchera
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Winter Containers
Polypodium vulgare Cyclamen coum
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Winter containers
Carex comans ‘Bronco’Iris ‘Katharine Hodgkin’ Photo: Rogerio Liria
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Winter Containers
Helichrysum italicum Brassica oloracea (Capita group) ‘Northern Lights’
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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