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
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Current Staff's Favorite Plant

Current Staff's Favorite Plant

Our Featured Plant: Crocosmia ‘Zeal Tan’

Captivating Crocosmias, Plants that Dodge to Dog Days of Summer, 2020 T-shirst have arrived!

Captivating Crocosmias!

Crocosmias boast a bounty of late summer color as our gardens transition into autumn. Displayed on the ends of gracefully arching spikes above winsome sword-like leaves, the clustered tubular flowers range from yellow, peach and orange to fire-engine red. The prismatic tones meld well with white-flowering Hydrangeas and perennials such as Selinium wallichianum, Actaea simplex 'Atropurpurea', Alcea 'Polarstar' or Aster 'Bridal Veil'. The yellow and melon shades sparkle amid the blue blossoms of Aconitum, Caryopteris 'Longwood Blue', Perovskia 'Blue Steel' and  Aster 'Little Carlow'. For sizzling fun you could create a hot border, intermingling them with Kniphofia 'Bee's Sunset', Helenium 'Potter's Wheel' or Helianthemum 'Fire Dragon'. Be sure to add some to your next cut arrangement!

Commonly known as Montbretia, they do their best when provided with good drainage, moderate moisture and some protection from hot afternoon sun. Please feel free to check out our extensive collection of Crocosmia cultivars in the perennial section of our online catalog.

Dodge the Dog Days of summer….

with plants that pack a punch of blooms and alluring leaves at this time of year. By late August, our borders can look a tad tired and may be in need of some sprucing up. Adequate moisture and an additional application of compost will ensure late summer vitality. You can trim perennials, such as Nepetas and Geraniums, and savor their fresh new growth plus a flourish of blooms, often until the first frost! We hope some of the plants featured in this newsletter lift your spirits and maybe even inspire a little awe as summer wanes. 

All of us Digging Dog plant wranglers wish you Happy Digging and good health.

Digging Dog Nursery Right Border