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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Latest News

Hot Diggity Dog! Our Website is open for orders!

Welcome back to Digging Dog's Website!

There are a few things we wanted you to know to help us help you receive your plants in a timely fashion…MORE

Are you thinking about contacting us? Please view some F.A.Q.'s

• POT SIZES: Our pot sizes are only listed on the Trees section, as our inventory changes and grows so quickly that it is impossible to list the container sizes…MORE



Current Staff's Favorite Plant

Current Staff's Favorite Plant

Our featured plant: Eupatorium purpureum

Statuesque Eupatoriums, Aster All-Stars, Late Summer Shipping!

Beloved by bees and butterflies...

Eupatorium, commonly called Joe-Pye Weed, is an easily grown, dignified North American denizen. Its large, hazy-looking broad domes of clustered rosy purple flowers crown sturdy, straight-up wine-tinted stems with textural deep green leaves that are presented in loosely spaced whorls. Lending handsome mass to meadow plantings and either the middle or back of the border, they can also be grouped or planted singularly along pond and stream edges, as well as woodland peripheries. Joe-Pye Weed appreciates sun or bright shade, good air circulation plus fertile adequately moist soil. Favored by bees and butterflies and perfect for cut arrangements, its fluffy blooms later broadcast mulled cocoa shades then morph into attractive seed heads, which nourish finches and tits. Eupatorium ‘Gateway’ struts a bushier more compact stature, while the straight species boasts a mighty sky-bound stance.

Aster’s cheerful daisy faces....

plus the profusion of colors and sizes that make up this genus promise lots of flower power when other perennials have tuckered out. Invaluable for summer and fall gardens, our no-fuss Aster offerings are tried-and-true performers in sunny locales with average soil and moderate moisture. Cherished by plant aficionados, flower arrangers, song birds and pollinators, many Aster cultivars work well in either formal or informal venues and can be tucked into stylized meadows, cottage gardens and borders Please feel free to peruse our additional on-line Aster selections. 

Sprinkled amidst the Asters, we’ve included Hydrangea ‘Limelight’s conical creamy white trusses, the mesmerizing fine-textured foliage of Sorbaria ‘Sem’ plus a handful of other perennials that add late summer appeal.   

 All of us plant and paper wranglers wish you good health and happy digging!

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