Invasive – Butterfly Bush
( Buddleia davidiiand cvs . )
1. Meyer Lilac
Name:Syringa meyeri
USDA Hardiness Zones:4 to 7
Size:6 foot grandiloquent and wide
shape : Full Sunday to fond shade ; intermediate , well - drained soil
This species lilac is shorter and more rounded than many other lilac , with foliation and flowers appearing even at ground floor . It bears intimate fragrant , light lavender to royal blooms in tardy spring , attracting visiting bee and other louse pollinators . Meyer lilac is insubordinate to powdery mildew .
Invasive – Japanese Knotweed
( Fallopia japonica )
2. Western Red Osier Dogwood
Name:Cornus sericeassp.occidentalis
Zones:3 to 8
sizing : Reaches up to 10 groundwork tall and 9 feet all-inclusive
condition : Full Sunday to partial refinement ; modal to moist land
Western crimson osier dogwood tree is a drought - tolerant Pacific Northwest native that perform well in a wide range of setting . Its big , arching outgrowth mold a vase shape , which may be exert by removing larger branches from the base of operations . White natural spring flowers on flat - crown inflorescences attract butterfly ; white Charles Edward Berry travel along , favor by birds . Leaves turn specter of red and over-embellished in fall , while newfangled red offshoot provide a arresting display in wintertime . This plant may pass around by stolon .
Invasive – Herb Robert
( Geranium robertianum )
3. Bloody Cranesbill
Name:Geranium sanguineumand cvs.
Size:12 to 18 inch tall , spreading to 18 column inch
condition : fond shadowiness ; average , well - drained soil
Bloody cranesbill is a vigorous but compact herbaceous perennial with masses of attractive leaf and efflorescence . It grows in a propagate and mounding form and is often used as a ground natural covering . Summer blossom are pallid pink to reddish purple .
Invasive – Scotch Broom
( Cytisus scoparius )
4. Forsythia
Name:Forsythiaintermediacvs.
Zones:6to9
Size:8 to 10 understructure tall and 10 to 12 feet wide
condition : Full Dominicus favor but will tolerate partial shade ; middling , well - drained soil
Forsythia ’s bright jaundiced blossom are a familiar sign of springtime , while pale to rich fleeceable leaves beautify its branch throughout the rest of the season . After the leaves deteriorate in autumn , the New sensationalistic - and - light - green branch provide winter interest . Forsythia naturally grows in a natural spring pattern ; prune entire branches from the base to maintain this appearance .
Linda R. McMahan is a horticulturist for the Oregon State University Extension Service in McMinnville , Oregon
Photos : # 1 ( encroaching ) , Forest and Kim Starr , Starr Environmental / www.bugwood.org ; # 1 ( choice ) , Susan A. Roth ; # 2 ( trespassing ) , Leslie Seiger , San Diego Mesa College / www.bugwood.org ; # 2 ( option ) , courtesy of Linda R. McMahan ; # 3 ( invading ) , Robert Vidéki , Doronicum Kft./www.bugwood.org ; # 3 ( choice ) , Michelle Gervais ; # 4 ( invading ) , Richard Old , XID Services , Inc./www.bugwood.org ; # 4 ( option ) , Steve Aitken
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