Planting for Drought Tolerance & Deer Resistance in the Rogue Valley

 Article By: Christie Mackison, Shooting Star Nursery

Destructive deer and hot, dry summers are two very common issues in the Rogue Valley. Drought tolerant and deer resistant plants are a good combination to aim for because the qualities in plants that repel deer can often be found in drought tolerant species- such as heavy oil content, textured or hairy foliage, strong odors, and tough, less succulent leaves. The key to keeping drought tolerant plants happy and more unpalatable to deer is to give them the habitat they are used to- so don’t water them every day just because its 90 degrees!

Good drainage is usually essential- if you don’t have it, you’ll probably have to water even less

No heavy fertilizing: Use only organic or slow release fertilizer if called for at time of planting. Over fertilizing will attract deer. If the plants look yellow it is usually from too much water, not lack of fertilizer.

Dedicate an area to drought tolerant plants: Don’t mix plants that need regular water with drought tolerant plants. Do not put them on the same irrigation system & timer or one group will suffer.

Do not over water! It’s best to plant drought tolerant plants in early spring or early fall so they can get established with the rains.

  • Once established many plants do not need summer water.
  • They will only need an occasional deep soak.
  • Don’t plant them where they will get extra water from lawn areas or runoff from other irrigated areas.

 How to get good drainage:

Mound up soil when making new beds or planting a new plant. Create a berm. Plant drought tolerant plants on a hillside or slope

Mulch with at least a 1″ layer of 1/4″-io gravel to keep dirt from rotting the crown of plant, to retain moisture during heat and keep plant roots warmer in winter

For clay soil amend with 1/4″- io gravel (sharp edge, no fines) and compost will help break down clay over time.

 How to water drought tolerant plants

Observe- most plants need to dry out before the next watering- stick your finger a few inches into soil (well below mulch, which will feel dry), if it is cool and damp, don’t need to water yet.

Infrequent But Deep Soak: This trains plants to have deep roots, not shallow. Often a deep soak every 2 weeks in heat of summer is enough- easier to do with drip irrigation than sprinklers

Watering rule of thumb (depends on site and soil type)

  1. 1st year of planting water deeply once a week for first month of summer,
  2. Then water once every 2 weeks for 2nd and 3rd month of summer
  3. Water once a month the 2nd summer and don’t water again.

 How to find drought tolerant plants

Look to natives- can tolerate summer drought and winter wet

Look to Mediterranean plants- similar climate (also cold hardy Australian and northern California plants, hardy desert plants/succulents) get help from your local nursery!- we’ve talked to countless customers and worked in our own gardens and have seen what works

How to find deer resistant plants

  • Look around your neighborhood drive or walk around heavy deer areas- Jacksonville, hills of east Medford, wooded parts of Ashland- observe what has been chewed- deer can be very neighborhood specific
  • Read lists, but be ready to experiment
  • use Liquid Fence, Plantskydd, or similar product on all new plantings to discourage initial browsing
  • Use cages around most new trees- to prevent antler damage and new growth chewing
  • Deer damage can depend on time of year you plant- when deer are especially hungry in fall and winter they can graze on almost anything
  • Use poisonous, strongly scented or sharply textured plants (grasses, sometimes prickly/thorny textures, fuzzy/hairy leaves, pine needles, etc.)
  • Talk to your local nursery- we know from our experiences and those of our customers and landscapers what has worked and what hasn’t

Planting for Drought Tolerance and Deer Resistance

Article By: Christie Mackison, Shooting Star Nursery

Destructive deer and hot, dry summers are two very common issues in the Rogue Valley. Drought tolerant and deer resistant plants are a good combination to aim for because the qualities in plants that repel deer can often be found in drought tolerant species- such as heavy oil content, textured or hairy foliage, strong odors, and tough, less succulent leaves. The key to keeping drought tolerant plants happy and more unpalatable to deer is to give them the habitat they are used to- so don’t water them every day just because its 90 degrees!

Drought Tolerant Plants:

No heavy fertilizing: Use only organic or slow release fertilizer if called for at time of planting. If the plants look yellow it is usually from too much water, not lack of fertilizer. Plus over fertilizing will attract deer.

Dedicate an area to drought tolerant plants: Don’t mix plants that need regular water with drought tolerant plants. Do not put them on the same irrigation system & timer or one group will suffer.

Do not over water! It’s best to plant drought tolerant plants in early spring or early fall so they can get established with the rains.

Once established many plants do not need summer water. They will only need an occasional deep soak.
Don’t plant them where they will get extra water from lawn areas or runoff from other irrigated areas.

Good drainage is usually essential but if you don’t have it, you’ll probably have to water even less.

How to get good drainage:

Mound up soil when making new beds or planting a new plant. Create a berm. Plant drought tolerant plants on a hillside or slope.

Mulch with at least a 1″ layer of 1/4-inch gravel to keep dirt from rotting the crown of plant, it helps retain moisture during heat and keep plant roots warmer in winter.

For clay soil amend with 1/4 inch gravel (sharp edge, no fines) and compost, it will help break down clay over time.

 How to water drought tolerant plants:

Observe:  Most plants need to dry out before the next watering- stick your finger a few inches into soil (well below mulch, which will feel dry), if it is cool and damp, don’t need to water yet.

Infrequent But Deep Soak: This trains plants to have deep roots, not shallow. Often a deep soak every 2 weeks in heat of summer is enough- easier to do with drip irrigation than sprinklers

Watering rule of thumb (depends on site and soil type):

1st year of planting water deeply once a week for first month of summer,
Then water once every 2 weeks for 2nd and 3rd month of summer
Water once a month the 2nd summer and don’t water again.

 How to find drought tolerant plants:

Look to natives they can tolerate summer drought and winter wet

Look to Mediterranean plants- they have a similar climate to the Rogue  Valley

Also cold hardy Australian and northern California plants,  and hardy desert plants/succulents.

Get help from your local nursery!- at Shooting Star Nursery we’ve talked to countless customers and worked in our own gardens and have seen what works here in the valley.

How to find deer resistant plants

Deer can be very neighborhood specific so look around your neighborhood. Drive or walk around heavy populated deer areas like Ashland, Jacksonville, and in the hills of east Medford. Observe what has been chewed.

Read lists, but be ready to experiment

Use Liquid Fence, Plantskydd, or similar product on all new plantings to discourage initial browsing.

Use cages around most new trees to prevent antler damage and new growth chewing.

Deer damage can depend on the time of year you plant- deer are especially hungry in fall and winter they can graze on almost anything.

Use poisonous, strongly scented or sharply textured plants (grasses, sometimes prickly/thorny textures, fuzzy/hairy leaves, pine needles, etc.)

Talk to your local nursery- we know from our experiences and those of our customers and landscapers what has worked and what hasn’t.

Horticulture Report: Rudbeckia hirta

Rudbeckia hirta

Black-eyed Susan  ‘Prairie Sun’

 Type: Herbaceous perennial – CULTIVAR

Height: 2.50 to 3.00 feet Spread: 1.50 to 2.00 feet

Bloom Time: June to frost

Bloom Description: Yellow-tipped orange rays with green center disk

Sun: Full sun Water: Medium Maintenance: Low

Suggested Use: Annual, Naturalize

Flower: Showy, Good Cut

Attracts: Butterflies Tolerate: Deer, Drought, Clay Soil

Culture

Biennial or short-lived perennial that is winter hardy to USDA Zones 3-7. It blooms in the first year from seed planted in early spring, and is accordingly often grown as an annual. It is easily grown in average, medium moisture, well-drained soils in full sun. Best in moist, organically rich soils. Tolerates heat, drought and a wide range of soils except poorly-drained wet ones. For best result from seed in the St. Louis area, start seed indoors around March 1. Seed may also be sown directly in the garden at last frost date. Some varieties are available in cell/six packs from nurseries. Set out seedlings or purchased plants at last frost date. Deadhead spend flowers to encourage additional bloom and/or to prevent any unwanted self-seeding. Whether or not plants survive from one year to the next, they freely self-seed and will usually remain in the garden through self-seeding.

 Noteworthy Characteristics

Ruudbeckia hirta, commonly called black-eyed Susan, is a common Missouri native wildflower which typically occurs in open woods, prairies, fields, roadsides and waste areas throughout the State. It is a coarse, hairy, somewhat weedy plant that features daisy-like flowers (to 3” across) with bright yellow to orange-yellow rays and domed, dark chocolate-brown center disks. Blooms throughout the summer atop stiff, leafy, upright stems growing 1-3’ tall. Rough, hairy, lance-shaped leaves (3-7” long). Plants of this species are sometimes commonly called gloriosa daisy, particularly the larger-flowered cultivars that come in shades of red, yellow, bronze, orange and bicolors.

Genus name honors Olof Rudbeck (1630-1702) Swedish botanist and founder of the Uppsala Botanic Garden in Sweden where Carl Linnaeus was professor of botany.

Species name of hirta means hairy in reference to the short bristles that cover the leaves and stems.

‘Prairie Sun’ grows to 3’ tall on stiff, upright, leafy stems. It produces a long summer-to-fall bloom of large, daisy-like flowers (to 5” diameter) featuring orange rays tipped with lemon yellow and greenish center disks. Flowers bloom singly atop strong, sometimes-branching stems. Rough, bright green leaves (3-7” long) in basal clumps with smaller stem leaves. ‘Prairie Sun’ is an All-America Selection winner in 2003 and a Gold Medal winner at the 2003 Fleuroselect trials in England.

Problems

No serious insect or disease problems. Susceptible to powdery mildew. Watch for slugs and snails on young plants. Can self-seed freely. Deer tend to avoid this plant.

Garden Uses

Borders. Annual beds. Cottage gardens. Wild gardens. Meadows. Groups or mass plantings. Good cut flower.

Article by: Lynn Kunstman, Jackson County Master Gardener

Posted by: Carlotta Lucas, AGC Member

Photo by: Bluestone Perennials https://www.bluestoneperennials.com

Firewise Plant: Evening Primrose

Plant Name:  Oenothera species

Common name:  Evening Primrose
Plant Type: Herbaceous Perennial or Biennial
Plant Height: 2’ – 6’
Plant Width:  1’ – 2’
Bloom Time: Spring, Summer, Fall
Flower Color:  Yellow or Pink or White
Exposure:  Sun to Shade
Soil Requirements: Rocky or Sandy Soil; Well-Drained
Water Needs: Low to Medium
Fire Resistant: YES; Zone 8 – Plant 30’+ from Structure
Attributes: Attract Moths; Birds Eat Seeds; Attracts Hummingbirds; Fragrant Flowers; Deer Resistant; Drought Tolerant
Uses: Full Sun Ground cover; Rock Gardens; Erosion Control; Native Plant Gardens
Note: Flowers Open in the Evening
Native to: Eastern North America
Oregon Native:  NO
USDA Hardiness Zone:  3 – 8

Report by: Viki Ashford, AGC Member & Master Gardener

Firewise Plant: Muscari armeniacum Grape Hyacinth

Plant Name:  Muscari armeniacum
Common name:  Grape Hyacinth
Plant Type: Bulbous Perennial
Plant Height: .5’ – .75’
Plant Width:  .25’ – .50’
Bloom Time: April
Flower Color:  Royal Blue with thin White Rim
Exposure:  Full Sun to Part Shade
Soil Requirements: Well Drained; Sandy; Loam
Water Needs: Medium
Fire Resistant:  YES; Zone 10 – Plant 10’+ from structure.
Attributes: Showy Flower; Fragrant; Good Cut Flower; Deer Resistant; Tolerates Clay Soil; Attracts Bees/Butterflies.
Uses: Mass in Open Areas; Around Shrubs; Under Deciduous Trees; Rock Gardens; Front of the Border; Container Plant.
Note:  Reduce Watering After Foliage Begins to Die Back.
Native to: Western Asia, Southeastern Europe
Oregon Native:  NO
USDA Hardiness Zone:  4 – 8

Report by: Viki Ashford, AGC Member, Master Gardener

Photo by (c)2008 Derek Ramsey (Ram-Man), GFDL 1.2 http://www.gnu.org/licenses/old-licenses/fdl-1.2.html, via Wikimedia Commons