Horticulture Report: Physocarpus capitatus (Pacific Ninebark)

Plant Name: Physocarpus capitatus
Cultivar:
Pacific Ninebark
Plant type: Deciduous shrubs
Height: 6ft to 15 ft (depends on the amount of sun it gets)
Bloom Time: May- June
Flower Color: White dome-shaped flowers
Exposure: Sun Sun or Shade ( it grows along stream banks)
Soil Requirements: Humus rich soil
Water Needs: Moist to wet
Attributes: NW native plant, Attracts bees & butterflies, Showy flowers, Seeds for birds
Notes: No Pests
Uses: Permaculture landscaping, Winter Interest (bark & seeds), Erosion control
USDA Zone: 4-10

Horticulture Report: Clerodendrum Trichotomum

Plant Name: Clerodendrum TrichotomumClerodendronTrichotomum
Common Name: Harlequin Glorybower
Plant type:  Deciduous Shrub or Small Tree
Height:   10 ft – 20 ft
Bloom Time:  July to September
Flower Color: White, Jasmine-like Tubular Flowers
Exposure:  Full Sun to Part Shade
(hardy but needs some protection)
Soil Requirements: Rich Well-Drained Soil
Water Needs:  Average, do not over water
Attributes:  Unique Leaf Aroma smells like Peanut Butter, Fragrant Tubular Flowers, Showy Iridescent Blue Fruit Surrounded by a Fleshy Red Calyxclerodendrum_trichotomum
Note: Seeds & parts of plant are poisonous if ingested, Handling plant may cause skin irritation or allergic reaction.
Uses: Hedges, Showy Ornamental,  Late Summer Flowers, Summer Interest
USDA Zone: 7a-9b

Horticulture Report: American Cranberry Bush

Viburnum trilobum (American Cranberry Bush)
Cultivar: Bailey Compact
Plant type: Deciduous Shrub
Height:   5-6 ft    Spread: 5-6 ft
Bloom Time: Late Spring -Early Summer
Flower Color: White
Exposure: Full Sun to Part Shade
Soil Requirements: Acid, Moist well-drained
Water Needs: Average, do not overwater!
Attributes: Oregon native, low maintenance, dense, compact round shrub, burgundy fall foliage, showy fruit, seasonal interest
Note: Berries non-edible
Uses: Woodland Garden, Borders
USDA Zone: 2a – 7b

Planting for Drought Tolerance and Deer Resistance

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

By: Christie Mackison, Shooting Star Nursery

Pollinator Plants

Butterfly Garden:
Black-eyed Susan  – Rudbeckia hirta
Blue Wildrye – Elymus glaucus
Butterfly Bush – Buddleia davidii
California Buckeye- Aesculus californica
Cardonna Blue Sage – Salvia nemorosa ‘caradonna’
Catmint – Nepeta faassenii
Coreopsis Coreopsis – sp. C. verticillata
Dwarf Goldenrod – Solidaga canadensis
Dwarf Maidengrass-  Miscanthus sinensus
Gay Feather – Liatris spicata
Idaho Fescue – Festuca idahoensis
Joe Pye Weed – Eupatorium maculatum
Junegrass – Koeleria macrantha (formerly Koeleria cristata)
Jupiter’s Beard – Centranthus ruber
Lavender – Lavandula angustifolia
Mexican Sunflower – Tithonia rotundifolia
Michaelmas Daisy – Aster novi-belgii
Milkwood – Asclepias sp.
Oregano – Oregianum vulgare
Ornamental Oregano – Origanum x ‘Rotkugel’
Perennial Sage – Salvia superba
Purple Cone Flower – Echinacea purpurea
Rockrose – Cistus purpureus
Rose of Sharon – Hibiscus syriacus
Shasta Daisy – Chrysanthemum maximum
Sulfur Flower (buckwheat) – Eriogonum umbellatum
Sweet William – Dianthus barbatus
Vervain (Purple top) – Verbena
Yarrow – Achillea millefolium

Amphibian & Reptile Garden:
California Black Flowering Sedge – Carex nudata
Compact Oregon Grape – Mahonia aquifolium
Kinnikinnick Arctostaphylos – uva-ursa
Oceanspray – Holodiscus discolor
Red-twig dogwood – Cornus stolonifera
Reed Grass – Calamogrostis acutiflora var. Karl Foerster
Scouler’s Willow – Salix scouleriana
Snowberry – Symphoricarpos albus
Soft Rush – Juncus effusus

Bird Buffet:
Amaranth – Amaranthus sp.
Morning Glory – Ipomoea sp.
Sorghum – Sorghum bicolor
Sunflower – Helianthus

(List from N. Mountain Park, Ashland OR – Habitat Gardens)

Horticultural Report: Ornamental Grasses

Ornamental grass species offer distinctive foliage and varying textures to blend and contrast with the more standard flowering perennials.

There are two types of grasses:  warm-season & cool-season. The warm-season grasses are mainly deciduous, growing from spring through summer, blooming in fall, & going dormant in winter.  Cool -season grasses are usually evergreen & start their growth in fall, flowering in spring and summer. Both types have their flower clusters atop slender stems which bend & flow in the wind making them an interesting feature in the garden.

Ornamental grasses also have two growth habits:  running & clumping. Running grasses multiply by spreading stolons or rhizomes, and can be invasive.  The clumping type is not invasive.

There are ornamental grasses for all light conditions & soil types, and many work as container plants.

Early spring is the best time to plant & divide, & cut back & tidy up clumps of dead leaves & flowering stems from the previous year.  When planting the grasses, work organic matter, compost, and a complete fertilizer into the soil, & plant the crown above the soil line to encourage drainage & prevent rot.
Carex buchananii - Leatherleaf Sedge-'Red Rooster'
Carex buchananii – Leatherleaf Sedge – ‘Red Rooster’
Light -full sun to part shade
Height – 18″ – 24″
Bloom – insignificant
Care – thrives in moist, rich soil
Featured uses – cool-season grass; narrow copper-bronze foliage; maintains color all year; upright-clumping form; ideal for containers
Other notes – Carex or Sedges are not true grasses, but their appearance is grass like.

Helictotrichon sempervirens – Blue Oat Grass
Light – full sun
Height – 2′ – 3′
Bloom – May – July; tan to cream flower spiked bloom on arching stems
Care – needs very well drained soil; feed in early spring with all purpose
fertilizer; comb out old growth Featured uses – cool-season grass; accent, borders, mass planting; semi evergreen perennial; stiff, clumping blue/gray to blue/green foliage

Imperata cylindrical – Japanese Blood Grass – ‘Rubra’
Light – sun or shade, but color is more intense if full sun or where
sunlight can shine through foliage
Height – 12″ – 24″
Bloom – none
Care – good soil & moderate watering
Featured uses – warm-season grass; moderate growing; clumping; deciduous; broadleaf foliage that is the most colorful of the grasses with the blood red color at the upper half of the blade

Pennisetum alopecuriodes – Dwarf Fountain Grass ‘Hameln’
Light – full sun
Height – 3′
Bloom – tan foxtail like flower plumes on slender stems rise above foliage from late summer into autumn
Care – average to good soil & regular watering Featured uses – warm-season grass; clumps of broadly arching foliage

Pennisetum setaceum – Fountain Grass – ‘Rubrum’
Light – full sun
Height – 2′ – 5′
Bloom – long plumes of dark rose colored flowers fading to beige from July to October
Care – drought tolerant
Featured uses – warm season grass; dense clump of bronzy, purplish red
foliage.

by: Viki Ashford