I can't tell you the number of times I've heard this. The conversation continues: "How often did you water it?" Usually the answer is three times a week. Rarely, once a week. "But more in summer."
My garden back in August. Having been hosed once every two or three weeks since April. (Except the lawn in the background, watered incessantly by the homeowners association.) |
Dear reader, you must remember this. Plants native to the coastal and foothill regions of California typically get no rain between May and September. Zero. Nada. Zilch. NO RAIN FOR FIVE MONTHS. In pictorial form:
Average Rainfall in Irvine (El Toro, 1981-2010) - from www.usclimatedata.com
Giant Coreopsis (Leptosyne gigantea) is a lush shrub daisy for four months of the year. The rest of the year it drops not only leaves but branches. Stalks only. Looks dead. Doesn't matter how much rain it gets. |
What is wrong with this picture? (from IRWD's "Rightscape- The Right Plants" educational presentation) It's inverted!
Unfortunately WUCOLS, the landscape professionals' guide to water requirements of plant species in California, uses the defective classification system in the above graph to classify plant watering needs. Summer dry? You'd never know such a thing existed from WUCOLS. This leaves most professional landscapers with a very poor track record growing natives. Sadly, many of them don't even know why.
|
This Artemesia 'David's Choice', may it rest in peace (foreground, silvery spikes), was adjacent to overwatered lawn. |
1. Know your plants. Some natives are at home in stream beds and swamps. They will put up with (and may need) lots of water. Ans they may still go dormant in summer. Others are notoriously touchy about ANY summer water, including that which seeps over from neighboring beds, and they want good drainage even in winter. These include Flannelbush, Coffeeberry, Wooly Blue Curls, and some of the many varieties of Buckwheats, Ceanothus and Manzanitas. These are some of our most spectacular natives. Ironically, desert plants often do better in coastal gardens than the plants that used to grow wild in those very spots, because desert plants are prepared to deal with occasional summer water (originally in the form of desert monsoons.)
From UCI's Arboretum, this Flannelbush (Fremontodendron) wants no water in summer, thank you. |
Seaside Daisy (Erigeron glaucus) can be slow to establish, but usually tolerates some garden water. It can grow among roses (sparingly watered) or in transition zones that get a bit of overspray and/or seep from lawns. |
2. Hydrozone. Put plants with similar water needs together, in the same sprinkler controller zone. Then in summer, turn native zones off. Or maybe leave them off all the time, especially if your controller runs weekly and not less often. If you're feeling lucky, you can try a native in the spot the sprinklers miss, but make sure it gets enough water to get established its first year. If you can't bear the thought of withholding water, put your natives in well-drained pots and water them weekly.
3. Don't be greedy. Adopt a conservation aesthetic that allows natives to go dormant in summer. A weekly or semi-weekly "dusting off" with "Dave's Beer Watering" is all coastal natives need to stay happy. Sparse watering (and no soil enrichment please!) may result in a slower growing plant. But hopefully one that will endure.
Sticky Monkeyflower 'Jelly Bean Orange'. Yes, Sticky Monkeyflowers bloom longer when you water them into the summer. Then they die. (You can treat them as annuals...) This one is tucked in between the never-water Coffeeberry in back and relatively thirsty Wood Strawberries in front so we'll see. |
Tomaz planted his garden next door five years before I got up the nerve. His success gave me the courage to take the plunge. |
To subscribe to this blog,
click here.
To use text or photos from this blog, click here. To share this post (do share!) click on the appropriate tiny icon below (email, facebook, etc.)
To use text or photos from this blog, click here. To share this post (do share!) click on the appropriate tiny icon below (email, facebook, etc.)
Thank you so much. This is exactly the kind of information I need. I have taken out all the grass in our back yard, and am trying to decide what to plant. I want to plant the ones that want no water separately from those that benefit from a bit, but I don't yet know which is which.
ReplyDeleteAnother thing you can do for the no-water plants is raise them up a bit. see "Indian Burial Mounds, http://canativegarden.blogspot.com/2015/01/indian-burial-mounds.html
DeleteIt is not about how much water you are giving to it, thing is everything have its time, your plant's time was completed. Now replace it and plant new one :)
ReplyDelete