Warning: Japanese Barberry!

Japanese Barberry  (Berberis thunbergii)
has been on the USDA invasive species Japanese Barberrylist since the 1980s. With its high seed production and 90% germination rate, this plant has taken over forest floors, wetlands and open spaces at an alarming rate. It is now found in the wild in 31 states; throughout all eastern and mid-western states, and areas of Wyoming and Washington.

Deer Tick_blacklegged tickRecently an alarming side effect of this plant’s escape into the wild has been discovered.  Japanese Barberry creates a humid microclimate creating a highly favorable environment for tick survival and reproduction cycles. This humid environment is especially suited for Deer Ticks (aka: Blacklegged Ticks) ( Ixodes scapularis), vectors of Lyme Disease!   And indeed, studies show Lyme Disease has increased where Japanese Barberry is prevalent.  This plant’s encroachment has now created a public health issue, which has BLM, USDA, and Agriculture Mangers  stepping up efforts to eradicate it in the wild.

Public education is key to controlling invasive species, but inexcusably this highly invasive shrub is still sold in nurseries and written about in garden magazines and nursery catalogs publicizing it as a suitable plant for urban landscapes!  Many states now prohibit the sell of Japanese Barberry, but they are still sold in Oregon, so please research plants before you buy them.  Be a Conscientious Gardener!

Invasive Plant Atlas:  https://www.invasiveplantatlas.org/index.html

Entomology Today: https://entomologytoday.org/2017/10/04/the-5-year-plan-manage-japanese-barberry-to-keep-tick-levels-low-reduce-lyme-risk/

Scientific American: https://blogs.scientificamerican.com/guest-blog/barberry-bambi-and-bugs-the-link-between-japanese-barberry-and-lyme-disease/

Oregon Invasive Species: http://www.oregon.gov/ODA/programs/Weeds/OregonNoxiousWeeds/Pages/AboutOregonWeeds.aspx

Article by: Carlotta Lucas

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Ornamental Grasses

Written by: The Pecks
For The Oregonian/OregonLive

A highlight from the article:Muhlenbergia capillaris.jpg

Interview with Josh Cady of Monrovia Nursery:.
“–Ornamental grasses, though considered low maintenance, need to be cut back before new spring growth each year. I always tell people to wait until they can’t stand how they look anymore, and then cut them back, which for me is usually by late winter. They are wildlife-friendly and an important food source for birds. They also lend a surreal beauty to a frozen winter garden.
–The best time to plant is August and September, but any time of the year is fine for the more hardy varieties.  Amend the soil with garden lime when planting.
–Josh recommends cutting back small and medium grasses with shears or pruners and larger clumps by using duct tape to gather the blades into a tight bundle, then cut with hedge pruners.”

Pruning  (http://growbeautifully.monrovia.com/pruning-ornamental-grasses)

Read full article, Ornamental Grasses You Simply Must Have, here:
http://www.oregonlive.com/hg/index.ssf/2017/10/ornamental_grasses_you_simply.html

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: 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

Powdery Mildew-Resistant Pumpkin & Squash

This list is reprinted from the University of New Hampshire Cooperative Extension https://extension.unh.edu/resources/files/Resource000617_Rep639.pdf

Powdery Mildew-resistant Pumpkin & Squash Varieties

Pumpkins – Large

18 Karat Gold R
Aladdin H
Gladiator H
Golden Condor M
Hercules H
King Midas S
Magician H
Magic Lantern H (BWS)
Merlin H (BWS)
SuperHerc H
Spartan SW

Winter Squash – Acorn
Autumn Delight R
Royal Ace H
Sweet Reba HM
Table Star R
Table Treat R
Taybelle PM R
Tip Top PMR J

Summer Squash – Yellow
Fancycrook HPS (crookneck)
Patriot II R (straightneck, TG)
Prelude II R (crookneck, TG)
Sunglo R (crookneck)
Sunray R,J, H (straightneck)
Success HM (straightneck)

Pumpkins – Medium

Charisma H
Hobbit H
Oktoberfest S
Scarecrow M
Pumpkins – Pie
Cannonball H
Harvest Princess M
Iron Man H (phyt)
Mystic Plus H
Prankster S
Pure Gold M
RockaFellow S
Touch of Autumn R, S, CW, CS

Winter Squash – Butternut
Betternut 401 S
Bugle R
Indian Brave NES
JWS 6823 PMR J
Metro PMR J
RB3106 r

Summer Squash – Zucchini
Ambassador HPS
Hurakan H (gray zucchini)
Judgment III (TG) SW
Justice II R (TG)
Lynx St
Payroll R, S, SW
Sebring (yellow zucchini) SW
Wildcat St

Pumpkins – Specialty

Bumpkin M (mini)
Gold Dust R (mini)
Hooligan (tricolor mini) CS
Gooligan (bicolor mini) CS
OneTooMany R (white/red
veins)
Sweet Lightning R (bicolor
mini)
 

Winter Squash – Specialty
Bush Delicata J, HPS
Celebration R (y/or acorn hybrid)
Harlequin R (gr/wht acorn hybrid)
MardiGras NES (gr/whtacorn hybrid)

All pumpkins and squash will develop powdery mildew symptoms if weather conditions favor the fungus. Resistant or tolerant varieties develop symptoms more slowly and maintain leaf coverage later in the season. For more information about controlling powdery mildew, see the New England Vegetable Management Guide, found online at http://www.nevegetable.org/.

 All varieties should be trialed on a small scale to determine whether they are suitable for your growing conditions, and markets.

 Legend of seed sources: R Rupp Seeds, M Meyer Seed International, H Harris Moran Seed Co, J Johnny’s Selected Seeds, HM High Mowing Seeds, HPS Horticultural Products & Services, N New England Seeds, SW Seedway, St Stokes, S Siegers, CS Carolina Seeds.

This information is presented as a guide only. No endorsement is implied, and sources listed are not necessarily sole sources.

Comments: Phyt – also tolerant to Phytophthora. BWS – Highly susceptible to bacterial wilt.

TG transgenic virus resistance, not compatible with USDA Organic Certification.