Hardiness & Climate

Average Annual Minimum Temperature Range per Zone
ZoneTemperature Range
Zone 2-50° to -40°
Zone 3-40° to -30°
Zone 4-30° to -20°
Zone 5-20° to -10°
Zone 6-10° to 0°
Zone 70° to 10°
Zone 810° to 20°
Zone 920° to 30°
USDA Hardiness Zone Map

Digging Dog Nursery is 3 miles from the ocean, on a ridge top, bordering both Zones 15 and 17 (according to Sunset's Western Garden Book) or Zones 8 and 9 (according to the USDA Plant Hardiness Zone Map).

We have a relatively mild climate, with the coldest temperatures generally in the low 20's and the warmer days reaching close to 80°. Occasionally we do have cold winters when temperatures dip into the low teens.

USDA hardiness zones are indicated for each plant to suggest minimum tolerable cold. Use these only as a loose guideline, keeping in mind the varied factors which can cause a plant to be vulnerable to cold. Remember, micro climates can be created in your garden, making it easier to raise supposedly tender plants in colder zones. In some areas, a cold pocket may force the temperature lower thereby creating problems for a hardy plant.

Digging Dog Plant Nursery Greenhouse

Height & Width Estimates

The first number given represents ultimate height of the plant, including flower height above foliage. The second number is the width. Use these sizes as a reference for your garden planning and designing.

The figures are approximate and may vary according to soil fertility, exposure to sun, and other environmental conditions. The sizes we list have been observed here in our home garden, and in other Northern California sites, both coastal and inland.

Most grasses and perennials will achieve estimated proportions in 2 growing seasons, shrubs in 3-5 years. In the tree section, the growth rate, size attained in 10 years, and/or the tree's ultimate height has been listed.

Bloom Times

The months stated represent the approximate flowering times for each plant. These may vary depending on your specific environmental conditions.

Plant Containers

We ship well-established plants which are grown in the following container sizes:

Small Band:
2-½" square x 5" deep
Medium Band:
3" square x 5-½" deep (the majority of our perennials & grasses)
Squat Band:
3-¾" square x 4-½" deep
Large Band:
4" square x 6" deep (most of our trees & many of our shrubs)
Quart:
5" square x 6" deep.

Occasionally, plants will be available in liners (2-¼ square x 3-¼ deep) or landscape plugs, and will be discounted $1.00-$1.50 off the regular price.

Digging Dog plants are removed from their containers, and their firm, intact rootballs are placed inside plastic bags prior to shipping.

When Your Order Arrives

If you're not ready to plant when the order arrives, open the box immediately and remove the plants. Place them in a shady spot, making sure they don't dry out. Newly planted selections should be protected from hot sun and drying winds, and watered adequately.

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  • Perennials at Digging Dog Nursery
    • Perennials: Acaena to Anthemis
    • Perennials: Anthriscus to Astrantia
    • Perennials: Baptisia to Cynoglossum
    • Perennials
    • Perennials: Fallopia to Gunnera
    • Perennials: Haloragis to Inula
    • Perennials: Kirengeshoma to Morina
    • Perennials: Nepeta to Pulmonaria
    • Perennials: Rheum to Succisella
    • Perennials: Teucrium to Yucca
  • Ornamental Grasses at Digging Dog Nursery
    • Grasses: Acorus to Deschampsia
    • Grasses: Elymus to Uncinia
  • Shrubs at Digging Dog Nursery
    • Shrubs: Arctostaphylos to Halimiocistus
    • Shrubs: Hebe to Weigela
  • Trees & Vines
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Current Staff's Favorite Plant

Current Staff's Favorite Plant

Our featured plant: Ribes sanguineum ‘King Edward VII’

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Spring salutations, early blooms, fresh unfurling foliage!

These early blooming vines and shrubs herald spring!

A choice deciduous shrub for an adequately moist woodland setting, Corylopsis pauciflora offers dangling fragrant primrose-yellow blooms amid graceful branches. The Flowering Current produces long lasting richly colored flowers, bird-friendly berries plus eye-catching autumn color. It thrives in both sun or part shade and handles some drought. 

Easily grown Clematis alpina ‘Constance’ is a small-statured climber that can be showcased in a tight spot or in a patio container. Beloved by gardeners since 1900, Clematis armandii ‘Apple Blossom’ combines lustrous evergreen foliage with copious vanilla-scented blooms, while appreciating a sheltered abode. Both these vines make lovely additions to early spring bouquets.

Spring Salutations!

We’ve been drenched with nearly 60 inches of rain here at the nursery. All that moisture coupled with several warm sunny days, has turned the garden into a verdant wonderland of unfurling shoots, leaves and blossoms. The perennials photographed in this newsletter were taken this week, either in the garden or in our open-sided greenhouses.

Happy Spring and happy digging! 

 

 

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