Hardiness & Climate
|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 7||0° to 10°|
|Zone 8||10° to 20°|
|Zone 9||20° to 30°|
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.
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.
The months stated represent the approximate flowering times for each plant. These may vary depending on your specific environmental conditions.
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)
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.