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Wednesday, September 6, 2017

Color in the Garden: Hot Colors


This year we are learning all about color in the garden, using Penelope Hobhouse’s book Color in Your Garden. This month we're spicing things up with "hot colors", and developing a plant palette of these rich, vibrant colors for our San Francisco Bay Area gardens.

Hobhouse defines hot colors as the spectral reds, oranges and yellows, ranging from red to yellowincluding pure red through scarlet, vermilion, and cinnabarto the richer orange-yellow. They are the warmest, lightest, and brightest colors – sunset colors that represent the warmth of fire and flame. The eye must adjust to the longer wavelength of these hot colors.

The reds contain no blue (so differ from the stronger crimsons that are considered Strong Reds). The deep yellows are orange tinged and have warmth, and the oranges are bright yet dark (lacking the gleam, luminosity, and clarity of Pure Yellow).

Spring


California Poppy

Calendula

Forsythia

Red Hot Poker

Pincushion

Clivia


We tend to want the restful and pleasing textured greens and grays of assorted foliage in our gardens, and yet we yearn for a glimpse of a vivid color through the green leaves. In hot climates, the fierce sun makes bright hues paler, but under gray skies the colors can be almost garish. The long red rays of evening sun mellow and enrich, the bright hues become deeper and more somber.

Summer


Day Lily

Lion's Tail

Succulent

Unknown

Yellow Poker

Bird of Paradise (multi-season)


Hobhouse recommends using bright colors for focus areas, and not for the whole garden. Plant bright colors for emphasis, contrast, and warmth. For example, contrast bright colors with greens or lighter shades of yellow, or grays (like Artemisia). Add blocks of white flowering plants to add brightness. Darken the purity of hot colors by using plants with shaded pigment, or plant hot colors in the shade where violet light links and darkens, and reduces the glare.

Fall


Sunflower

Dahlia

Flowering Gum

Magnolia Berries


Place bright reds, oranges, and yellows against a background of low-toned complementary or contrasting color, such as:
  • Bright orange flowers against pale blue catmint.
  • Scarlet tulips against a bed of pale blue forget-me-nots.
  • Harsh yellow roses against violet colored lavender flowers.
  • Bright pairs of complementary colors used together to make small, separate pictures (such as spring blues and yellows in neighboring drifts, or blues and oranges).

Winter


Vireya (tropical Rhodies)


Another Vireya

Unknown

South African Daisy

Banksia

Eucalyptus


In addition, use brick walls of warm orange, red-toned or buff, instead of red brick, and use garden furniture in plain low-toned or dark colors. Use weathered and aged terracotta pots.

Foliage


Summer Poinsettia

Pepper Tree


Fall foliage naturally takes on the hot colors of yellow, orange and red. Factor this seasonal change into your garden design, as well interesting seeds and berries.

To find more about the hot colored flowers and foliage that thrive in the San Francisco Bay Area, see Wildflowers of the East Bay Regional Park District. Another good source is Plants and Landscapes for Summer-Dry Climates.

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