Horticulture Report: Diabolo® Ninebark

Plant Name:  Physocarpus opulifolius ‘Diabolo®’
Common name: Ninebark ‘Diabolo®’
Plant Type: Deciduous Shrub
Plant Height: 4’ – 8’
Spread: 4’ – 8’
Bloom Time: May – June
Flower Color:  Pinkish White with Purple Leaves and Reddish Fruit.
Exposure:  Full Sun to Part Shade
Soil Requirements:  Tolerates many soil types.
Water Needs: Dry to Medium
Attributes:  Drought Tolerant; Bird Friendly
Note:  Prune immediately after bloom.
Uses: Hedge; Exfoliating Bark provides Winter Interest; Shrub Border.
Native to: North America
Oregon Native:  NO
USDA Hardiness Zone:  2 – 7

Report by: Viki Ashford, AGC Member & Master Gardener

Photo from: Monrovia  https://www.monrovia.com/plant-catalog/plants/1926/diabolo-ninebark/

Oregon Native: Helianthus annnuus

Plant Name: Helianthus annnuus
Common name: Common Sunflower
Plant Type:  Annual
Plant Height:  1.5’ – 8’
Spread:  1.5’ – 3’
Bloom Time: July – October
Flower Color:  Yellow with Bicolor Rays & Brown to Purple Center Disk.
Exposure:  Sun
Soil Requirements:  Average Moist, Well-Drained; Tolerates Poor Soil.
Water Needs:  Medium
Attributes: Birds seek seeds; Deer & Drought Tolerant; Nectar Plant for some Insects.
Note:  Spread rapidly by seed; Extensive crossing & hybridizing results in large number of cultivars; rust, leaf fungal spot, & powdery mildew can be a problem.
Uses: Back Borders, Cottage Gardens; Bird Gardens; Wildflower & Native Plant Gardens.
Native to:  Manitoba to Minnesota to Texas & westward.
Oregon Native:  YES
USDA Hardiness Zone:  2 – 11

Report by: Viki Ashford

Photo by: Carlotta Lucas

Oregon Native Plant: Achillea millefolium (Common Yarrow)

Plant Name:  Achillea millefolium
Common name:  Common Yarrow
Plant Type:  Perennial
Plant Height:  3’
Spread: 2-3′
Bloom Time: April – September
Flower Color:  Yellowish White
Exposure: Sun to Part Shade
Soil Requirements:  Dry
Water Needs: Medium
Attributes:  Use in Fresh or Dried Arrangements with pleasing Fragrance; Value to native bees. Attracts butterflies.
Note:  A complex of both native and introduced plants and their hybrids.
Uses:  In fresh or dried arrangements; pleasant fragrance.
Native to:  North America
Oregon Native:  YES
USDA Hardiness Zone: 3 – 9

Report submitted by: Viki Ashford

Photo by: (c) Steve Guttman, some rights reserved (CC BY-NC-ND), http://www.flickr.com/photos/24013640@N02/3683708823

Horticulture Report:Phlox stolonifera (Creeping Phlox)

Plant Name: Phlox stolonifera
Common name: Creeping Phlox
Plant Type: Semi-Evergreen Perennial
Plant Height: 6″ – 12″
Spread: 9″ – 18″
Bloom Time: May – September
Flower Color: Lavender, Blue, or White
Exposure: Part Shade to Shade
Soil Requirements: Humus Rich, Moist Soil
Water Needs: Medium
Attributes: Deer Tolerant
Note: Slugs a problem in Moist Soil; Spread by Stolons
Uses: Ground Cover; Cover for Early Spring Bulbs; Border Fronts; Rock Gardens.
Native to: Southeastern US
Oregon Native: NO
USDA Hardiness Zone: 5 – 9

Report by Viki Ashford, AGC Member

Photo Credit: Michael Wolf / CC BY-SA (https://creativecommons.org/licenses/by-sa/3.0)

Wildflower: Helianthus mollis

Plant Name:  Helianthus mollis
Common name: Ashy Sunflower, Hairy Sunflower, Downy Sunflower
Plant Type:  Rhizomatous Perennial Sunflower
Plant Height: 2’ – 4’
Spread:  1’ – 3’
Bloom Time: July – September
Flower Color:  Ray & Disk Flowers are Yellow.
Exposure:  Full Sun
Soil Requirements:  Average, Sandy, Poor Rocky Soil that Drains Well.
Water Needs:  Dry to Medium
Attributes: Attracts Birds & Butterflies; Tolerates Dry, Rocky Soil.
Note:  Plants spread by rhizomes & self-seeding to form colonies; Caterpillars & Beetles often chew foliage.
Uses: Showy Flower for Arrangements; Naturalized Areas, Border Gardens, Wildflower & Native Plant Gardens.
Native to:  Central & Eastern North America
Oregon Native:   NO
USDA Hardiness Zone:  4 – 9

May 2020: Garden of the Month

720 Forest Street

The wonderful garden at 720 Forest St. is a labor of love for homeowners Vicky Sturtevant and Alan Armstrong and is The Ashland Garden Club’s Garden of the Month for May. They have deftly combined edibles with ornamentals in this space they have gardened since 1983.

It is a heavily shaded lot, particularly the upper, forested quarter-acre parcel that they purchased separately. In all, they have a half-acre that they manage beautifully. The hardscape was designed by Covey-Pardee Landscape Architects in 2009. Eric Cislo welded the gates and Ted Loftus constructed the stone walls. The deer are kept out.

The couple enjoys being outside and are inveterate hikers, so they also love gardening. They devote a lot of time to it and it shows. Nothing is neglected. They follow the sun throughout the yard and throughout the year.

Grandparents of both instilled in them a love of plants and a tradition of gardening. Alan’s grandparents were farmers. Vicky’s had a large lot and grew all kinds of things, especially roses. There is a vigorous peony in the yard that came from Vicky’s grandparents. She speaks fondly of how much certain plants remind us of certain people. Happily, their adult son loves gardening, too.

Both Alan and Vicky are very knowledgeable about plants and have noticed that plants native to the Pacific Northwest, in which they have specialized, are beginning to struggle to survive and that now plants native to Northern California are more likely to thrive in Ashland. So it is to them they are turning their attention.

Visitors who walk or drive by will notice the great diversity of plant life in this garden. Among favorites of the couple are species rhododendrons (includes azaleas), Penstemons, Salvia, Agastache, and Marionberry. In May, dogwood, lilac, and rhododendrons make a stunning display.

Article by: Ruth Sloan, AGC Garden of the Month Committee Chair

Photos by: Larry Rosengren