Glechoma hederacea variegata – Ground Ivy

A gorgeous, rapidly spreading deciduous ground cover. It completely surrounded my backyard “arbor nook” within one summer 2 years ago, then vanished in the middle of last summer. Perhaps it was the cool, rainy weather, or perhaps, it was yet another victim, albeit delayed, of the killer black walnut tree.

The species is considered an invasive lawn weed, but this cultivar is less so.

Rubus laciniatus Wildd., cutleaf blackberry

Identification characteristics:

1. Fast growing invasive shrub with thorny stems and arching habit

2. palmately lobed simple leave

3. edible black compound fruit

Campsis radicans, Trumpet creeper

Identifying characteristics:

  1. root-like aerial holdfasts typically abundant
  2. opposite leaves
  3. pinnately compound leaves, coarsely toothed
  4. trumpet-shaped red/orange flowers

Hedera helix, English ivy

IDentifying characteristics:

  1. Evergreen alternate leaves
  2. Climbing vine w/aerial rootlets
  3. tri-lobed juvenile leaves w/white veins

What is “invasive”?

In the broadest sense, invasive species are those which were “artificially” introduced into an ecosystem, either intentionally as “exotic” ornamentals, or inadvertently via passive seed transport through international travel and commerce. The problem results when invasives thrive to the detriment of native species, in some cases completely wiping out the natives. This dominance is frequently the result of certain traits that give the invasive an advantage over natives, freequently:

  1. Production of many offspring
  2. Early and rapid development
  3. High tolerance and adaptability to many environmental conditions
  4. Genetic resistance to local fauna and diseases

The negative impact of invasives is far-reaching. Studies show that invasives can reduce
natural diversity, impact endangered or threatened species, reduce wildlife
habitat, create water quality impacts, stress and reduce forest and agricultural
crop production, damage personal property, and cause health problems.*

*Source: New Hampshire Department of Agriculture, Markets & Food
Terrestrial Invasive Plant Species, “Guide to Invasive Upland Plant Species in New Hampshire”

Buddleia davidii, Butterfly bush

Identifying characteristics:

1. Opposite lanceolate, silvery-gray leaves with short petioles

2. Terminal purplish flower panicles, pleasant fragrance

3. Large arching habit

Wisteria floribunda, Japanese wisteria

Identifying characteristics:

1. Vines twine clockwise (see photo of shed, twining to right of shed)

2. Petiole flattened at base

3. Alternate pinnately compound leaves w/13 – 19 leaflets, rounded base and acuminate tip

Spirea japonica, Japanese spirea

Identifying characteristics:

1. Simple alternate leaves with sharply serrate margins

2. Showy terminal pinkish flower clusters

3. Dry brown follicle fruits persist

Berberis thunbergii ‘Aurea’, Japanese barberry

Identifying characteristics:

1. Single 0.5″ thorn at each node

2. Alternate simple leaves

3. Deciduous shrub with ovate leaves

Toxicodendron radicans, poison ivy

Poison ivy patch

Poison ivy patch

Identifying characteristics:

1. 3 leaflets

2. alternate leaves

3. no thorns

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