Vines

Climate Ready Vines

Traditionally, trees have been used to shade and cool buildings. However, trees can take many years to grow to a size that is effective in providing these services. Few vine species have been studied for their ability to mitigate solar loads onto buildings thereby reducing the surface temperatures of walls. Vines on trellises have the potential to render similar cooling effects and can grow at a much faster rate than trees. However, a rigorous evaluation that compares the performance of a large number of vines taxa has not been conducted. This project seeks to demonstrate the growth rates and water needs of different vines and the impact of these variables on the ability to reduce temperature around structures in the various climates across the Western US.

This is a multi-state collaborative research effort to evaluate and monitor cooling effects, water use, and horticultural characteristics of vine plants across different climates and latitudes. The project utilized the Climate Ready Plants network to evaluate vines at five study sites located in the western U.S. states of Arizona, California (2 sites), Utah, and Washington. The project seeks to generate data, knowledge, and information needed to support growers and consumers in identifying vine taxa that are suitable for their climate.

Trial Site Locations

  • Davis, California - UC Davis (UCD)
  • Irvine, California - South Coast Research & Extension Center (SCREC)
  • Logan, Utah - Utah State University (USU)
  • Seattle, Washington - University of Washington (W)
  • Tucson, Arizona - University of Arizona (UA)
Vines Trialed

While full results are pending, selected results have been formatted into brief, easy to read scorecards to provide an at-a-glance overview of how the plants performed during the trial.

Click here to view a list of all species evaluated & their locations (pending) |  Click here to view all the scorecards (PDF)

Sunlit green vine leaves on dark vertical fence, bright highlights and shadows

Hardy kiwi vine

Actinidia arguta ‘Issai’

Self-fertile, produces edible green fruits in late summer - early fall

Scorecard (PDF) | Results

Sunlit cluster of red trumpet flowers on a green-leaved vine, photo

Madame Galen trumpet vine

Campsis × tagliabuana ‘Madame Galen’

Grow it for the attractive red-orange tubular flowers popular with hummingbirds

Scorecard (PDF)

White lacecap hydrangea blooms with three sterile florets and central tiny yellow-green flowers

Climbing hydrangea

Hydrangea anomala subsp. petiolaris

Attractive foliage, fragrant flowers, well-suited for shaded areas with low maintenance needs

Scorecard (PDF)

Cluster of white star-shaped flowers with yellow centers on green shrub

Potato vine

Solanum jasminoides

Abundant, snowy white flowers and lush foliage during blooming season

Scorecard (PDF)

Purple lupine flower cluster photographed close-up on green stem

Amethyst Falls American Wisteria

Wisteria frutescens ‘Amethyst Falls’

Attractive fragrant flowers, silvery-colored new growth and a slow-growing habit

Scorecard (PDF)

Pale yellow-green clustered bell flowers among glossy green leaves in sunlight.

White flowered chocolate vine

Akebia quinata ‘Shirobana’

Fragrant white dangling spring flowers, attractive palmate foliage, and vigorous climbing vine

Scorecard (PDF)

Pink clematis bloom with fuzzy seedheads and green leaves, outdoor photograph

Princess Diana clematis

Clematis texensis ‘Princess Diana’

Attractive, long-lasting flowers with good trellis coverage and relatively low maintenance

Scorecard (PDF)

Pink and yellow honeysuckle flowers clustered against a blue sky

Goldflame honeysuckle

Lonicera × heckrotti ‘Goldflame’

Pink and yellow flowers waft scent into the landscape and are visited by hummingbirds

Scorecard (PDF)

White pinwheel jasmine flowers with green buds and glossy dark leaves

Star jasmine

Trachelospermum jasminoides

Easy to maintain vine with fragrant dense blooms that brighten up a landscape

Scorecard (PDF)

Cluster of yellow flowers amid yellow-green bracts and glossy leaves, sunlit photo

Yellow orchid vine

Callaeum macropterum

Showy yellow orchid-like flowers spring through summer, winged butterfly shaped chartreuse fruits

Scorecard (PDF)

Cluster of bright yellow trumpet-shaped flowers on a leafy vine in sunlight (photograph)

Yellow jessamine

Gelsemium sempervirens

Solid evergreen backdrop, yellow flowers herald arrival of spring

Scorecard (PDF)

White trumpet-shaped flowers with deep magenta centers and green foliage in background

Variegated bower vine

Pandorea jasminoides ‘Variegata’

Lush foliage; vibrant flowers attract pollinators; pest & disease resistant

Scorecard (PDF)

Dense wall of green, red, and maroon climbing vine leaves

Virginia creeper

Parthenocissus quinquefolia

Fiery red fall foliage, inconspicuous flowers popular with pollinators, and fruit for birds

Scorecard (PDF)

Dense green vine leaves filling frame with blue sky peeking above

Roger’s Red California grape

Vitis × ‘Roger’s Red’

Attractive green canopy turning fiery red in fall, fruit mostly for wildlife (we made jam!)

Scorecard (PDF)

Close-up photo of three red trumpet-shaped flowers among green leaves

Balboa Sunset trumpet vine

Campsis radicans ‘Monbal’

Vigorous grower, covers trellis quickly, showy trumpet-shaped flowers attract pollinators

Scorecard (PDF)

Clusters of bright purple pea-like flowers with narrow green leaves

Purple lilac vine

Hardenbergia violacea

Vibrant purple blooms that attract pollinators and provide early season interest

Scorecard (PDF)

Dark bee dusted with pollen on purple-and-white passionflower

Blue passionflower

Passiflora caerulea

Reliably produces eye catching flowers that attract bees and yield bright orange fruits

Scorecard (PDF)

Pale purple wisteria cluster on a vine with green leaves and a metal fence background

Texas Purple Japanese wisteria

Wisteria floribunda ‘Texas Purple’

Showy cascading purple flowers, striking spring display, and popular with pollinators

Scorecard (PDF)