Drought Tolerant Garden
Purpose
The garden is intended to provide an aesthetically pleasing presentation of plants which are able to tolerate drought conditions.Habitat
The garden features five beds separated by gravel-edged stone pathways.The five beds are built on land which is terraced on a north to south slope, thereby providing for level planting areas - although the land itself has a substantial gradient. As such, the south end is not subject to accumulated water draining from the upper level.
The entire garden is exposed to full sunlight, with the exception of a narrow band on the east side which is partially shaded by a boundary privet hedge.
The soil in the garden was amended prior to planting by adding a quantity of grit. The entire area was then covered with landscape cloth and mulched with a minimum 5 cm of gravel.
Plants are established by insertion through slashes made in the landscape cloth. In addition, some containers are used, particularly for vulnerable plants such as cacti.
Watering is by irrigation system. During 2003 watering was 15 minutes per week.
History
The garden was designed, constructed and planted in July and August 2003 by staff and students of the Horticulture Centre.Gardening activities were restricted to general maintenance and observation from September 2003 to Spring 2004.
Features
The drought tolerant garden seeks to provide examples of several plant families, from trees and shrubs to perennials and annuals.A variety of plants traditionally considered to be drought tolerant are featured, such as cacti, succulents and hardy Mediterranean herbs.
In addition are plants normally more associated with moist conditions, such as Achillea, Bellamcanda and Diascia, are also included for experimental purposes.
By the same token, the garden presents plants requiring fertile soil, or poor soil, or gritty soil, all in the same locale.
During the garden's first year the summer was hot and dry. Most of the plants thrived in this climate irrespective of individual moisture or soil requirements.
The summer was followed by a very wet and frosty winter, during which several plants died, in particular the cacti and sedum.
One of the challenges for a drought tolerant garden in Victoria will be to foster plants which can survive with virtually no water in the summer and excessive water and frost in the winter.
During 2004 experimentation will be made with additional plants and also with greater use of containers where plants need more care in the winter.
Support
The drought tolerant garden is funded by HCP and is maintained by the DTG partnership group and the staff and students of HCP.Plants
Aconitum - Monkshood
Alchemillia alpina - Lady's Mantle
Achillea millefolium "Cerise Queen" - Yarrow
Allium cernuum - Nodding Onion
Arbutus unedo - Strawberry Tree
Artemesia "Limelight"- Wormwood
Belamcanda chinensis - Blackberry Lily or Leopard Lily
Brachyglottis greyii
Camassia - Camas
Catanache major - Cupid's Dart
Catanache caerulea - Cupid's Dart
Cerinthe major "Purpurescens"
Coreopsis "Tequila Sunrise"
Dianthus deltoides - Pinks
Diascia "Coral Canyon"
Digitalis - Foxglove
Echinacea purpurea "Magnus" - Coneflower (Also Echinacea paradoxa)
Echinops ritro ssp ruthenicus - Globe Thistle
Echium pininana
Echium russicum
Eragrostis eliottii - Love Grass
Eryngium planum - Sea Holly
Eremurus x isabellinus "Ruiter Hybrid" - Desert Candle
Erysimum "Wenlock Beauty" - Wallflower
Euphorbia "Blue Haze"
Euphorbia griffithii "Fireglow"
Euphorbia myrsinites
Euphorbia palustris "Magic Flute"
Euphorbia wulfenii
Festuca valesiaca "Nefer" - Fescue
Gazania x hybrida
Gaura lindheimeri and G.l. "Siskiyou Pink"
Geranium renardii
Hebe Ochracea "James Stirling"
Helianthemum nummularium "Peach" - Rockrose
Helichrysum italicum
Heuchera "Velvet Night"
Lavandula augustifolia "Hidcote" - Lavender
Leontopodium alpinum - Edelweiss
Liatris spicata - Blazing Star
Lobelia cardinalis
Lobelia "Queen Victoria"
Miscanthus sinensis "Gracillimus" - Maiden Grass
Miscanthus sinensis "Silberfeder" - Silver Feather
Muehlenbeckia complexa - Maidenhair Vine
Nepeta - Catmint
Opuntia basilaris v. hurea - Beaver tail cactus
Opuntia fragilis v, denudata "pink"
Opuntia imbracita
Opuntia polycanthia "Wasatch Pink"
Opuntia rutila
Papaver orientale "Pizzicato" - Poppy
Perovska atriplicifolia - Russian Sage
Phlomis russeliana
Phormium "Platt's Black"
Phormium tenax
Rosmarinus officinalis "Prostratus" - Rosemary
Rubus pentalobus "Emerald Carpet" - Creeping raspberry
Salvia officinalis - Sage
Santolina rosmarinifolia
Sedum alboroseum "Mediovariegatum'
Sedum "Blue Carpet"
Sedum kamtschaticum "Variegatum"
Sedum spectabile "Autumn Joy"
Sedum spurium "Fuldaglut"
Sedum spurium "Dragon's Blood"
Sedum telephium "'Matrona"
Thymus pseudolanuginosus - Woolly Thyme
Yucca filamentosa - Adam's Needle