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(Aubrieta deltoidea ‘Purple’)

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Purple Rock Cress is a mat forming perennial flower that is native to the Mediterranean region but can be found growing on hills and slopes throughout California. At maturity, this plant reaches the height of 4-9” and features a low-growing mat of downy green foliage, covered by four-petaled ½-1” flowers of bright pinkish purple. This plant can be grown in a container, attracts bees, butterflies, and hummingbirds, is resistant to deer, self sows, and is great as a cut flower!  

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  • General Information
  • Germination
  • Seedlings
  • Harvesting
  • Seed Saving
  • Companion Planting
<
>
Family: Brassicaceae

Genus: Aubrieta 

Species: deltoidea

Variety: Purple Rock Cress

Also Known As: Lilacbush, Rock Cress

Native to: East Aegean Is., Greece, Kriti, Sicilia, Turkey.

Introduced into: Belgium, California, Czechoslovakia, France, Great Britain, Spain, Switzerland.

Ease of Growing: Easy

Grown as: Perennial
 
Maturity (Blooms): 
Spring-Early Summer

Light: Full Sun to Part Shade

Water: Low
​
Soil Moisture: Medium

Beneficial Insects?: Yes. It attracts bees, butterflies, hummingbirds, and resists deer. 

Containers: Yes

Height: 4-9”
 
Spacing: 18-24”

Sow Depth: 1/4"
 
USDA Zone: 
4a-9b

Produces: a low-growing mat of downy green foliage, covered by four-petaled ½-1” flowers of bright pinkish purple.
In late fall or early spring, sow the seeds on the surface of the soil; do not cover them, since they need light to germinate. Keep the soil lightly moist until germination, which should take place within 10-14 days. To start the seed indoors, sow it on the surface of a flat about 6 weeks before the last spring frost; keep it lightly moist and at a temperature of 60-65 degrees F until germination. Transplant or thin the seedlings to 12-15” apart. This plant prefers full sun and very well drained soil, though it tolerates partial shade.
Seedlings should be watered regularly for the healthiest growth, though established plants prefer dry soil and only need water in the driest weather. A layer of light gravel may help keep the soil well drained. Too much moisture, humidity, or heat will damage the plant. When grown from seed, these plants will bloom in their second season. After the plants finish flowering, prune them back to half their size for tidy, compact new growth. Avoid pruning them in late fall or spring, since this can prevent blooming. Mature plants can be divided after 2-3 years of growth. Because of its hardy, low growth and cascading habit, this plant makes a good choice for rock gardens, walls, or between paving stones. Deer avoid this plant.
This flower is best displayed outdoors, since it is unsuitable as a cut flower.
Watch the developing seed heads carefully, looking for the mature dark color of the seed. Remove the heads individually when ripe, or shake the entire plant over a container to gather the seed.
There are several other rock garden or wall plants for sun that bloom about the same time as Aubrieta. Some of the more popular ones include Arabis, candytuft, perennial alyssum, pasque flower, and cushion spurge. All of these are great companions for bulbs that, like rock cress, prefer well-drained, slightly alkaline soil and full sun. The blues, purples, and reds of Aubrieta make perfect companions for pink tulips or golden daffodils.

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  • Store
    • Gift Certificates
    • Our Flower Seeds >
      • Alyssum, Sweet
      • Baby's Breath
      • Balsam
      • Bee Plant
      • Bergamot
      • Billy Buttons
      • Black-Eyed Susan
      • Blanket Flower
      • Blazing Star
      • Boneset
      • Burning Bush
      • Calendula
      • Camass
      • Canterbury Bells
      • Cardinal Flower
      • Castor Bean
      • Catchfly
      • Celosia
      • China Asters
      • Chinese Houses
      • Clarkia
      • Clover
      • Coleus
      • Columbine
      • Compass Plant
      • Coneflower
      • Coral Bells
      • Cornflower
      • Cosmos
      • Dahlia
      • Daisy
      • Dame's Rocket
      • Dusty Miller
      • False Goats Beard
      • Four O'Clocks
      • Foxglove
      • Gas Plant
      • Gazania
      • Gilia
      • Hibiscus
      • Hollyhock
      • Ice Plant
      • Iris
      • Irish Moss
      • Joe Pye Weed
      • Lacy Phacelia
      • Lamb's Ear
      • Larkspur
      • Lupine
      • Marigold
      • Milkweed
      • Moonwort
      • Morning Glory
      • Moss Rose
      • Nasturtiums
      • Nemophila
      • Obedient Plant
      • Pansy
      • Penstemon
      • Petunia
      • Pheasant's Eye
      • Pink Nodding Onion
      • Poached Egg Plant
      • Polka Dot Plant
      • Poppy
      • Poppy Mallow
      • Purple Rock Cress
      • Queen of the Prairie
      • Red Hot Poker
      • Rose of Heaven
      • Sedum
      • Snapdragon
      • Spider Plant
      • Spiderwort
      • Strawflower
      • Sunflower
      • Sweet Williams
      • Tobacco
      • Winged Everlasting
      • Zinnia
    • Our Fruits Seeds >
      • Strawberries
    • Our Herb Seeds >
      • Angelica
      • Anise
      • Balm: Lemon
      • Basil
      • Bee Balm
      • Borage
      • Caraway
      • Catnip
      • Chamomile
      • Chervil
      • Chia
      • Chives
      • Coriander
      • Cress
      • Cumin
      • Dill
      • Fennel
      • Fenugreek
      • Heal All
      • Hyssop
      • Lavender
      • Lemongrass
      • Lovage
      • Marjoram
      • Mint
      • Monkshood
      • Motherwort
      • Oregano
      • Peppercorn
      • Rosemary
      • Sage
      • Savory
      • Skullcap
      • Sorrel
      • St. John's Wort
      • Tarragon
      • Thyme
      • Toothache Plant
      • Valerian
      • Yarrow
    • Our Vegetable Seeds >
      • Amaranth
      • Artichoke
      • Arugula
      • Asparagus
      • Beans
      • Beets
      • Broccoli
      • Brussels Sprouts
      • Cabbage
      • Carrots
      • Cauliflower
      • Celery
      • Collards
      • Corn
      • Corn Salad
      • Cucumbers
      • Eggplant
      • Gourd
      • Ground Cherry
      • Kale
      • Kohlrabi
      • Leeks
      • Lettuce
      • Melons
      • Mustard
      • Okra
      • Onions
      • Parsley
      • Peas
      • Peppers
      • Pumpkin
      • Radish
      • Rhubarb
      • Salsify
      • Spinach
      • Squash
      • Swiss Chard
      • Tomatillo
      • Tomato
      • Turnips
  • Point System
  • Get More, Here's How
  • Contact Us