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This euphorbia puts thrill in fill


Diamond Mountain euphorbia has tiny winged flowers. It's new from Proven Winners. (Photos: Debbie Arrington)

Euphorbia fills in beautifully between Supertunia and Angelonia.
New plant introduction: Frilly but tough Diamond Mountain loves Sacramento heat



One plant can change a whole family's reputation. It can put the thrill into fill.

Such is the case with a surprising euphorbia that should find a home on California patios for many summers to come. Called Diamond Mountain, this euphorbia hybrid is a new introduction from Proven Winners. It's similar to an earlier introduction, Diamond Frost, but bigger -- 24 to 36 inches tall and wide.

Euphorbia is better known by its common name: spurge. Sacramento gardeners rank spurge among their most hated weeds. But euphorbia is a big family, and this hybrid plays up its good points. What makes spurge such a persistent weed works for Diamond Mountain: It has very low-water demands, needs no maintenance, withstands intense heat, grows quickly and blooms like crazy -- in full sun or mostly shade.

Diamond Mountain also plays an underappreciated but very useful role: It's good filler. Like baby's breath in bouquets, it's a tiny little white flower that fills the gaps around the big showy blooms. But those little flowers make their counterparts look better and visually hold the arrangement together.
That same concept works in container gardens and larger landscape beds. With its strange winged white flowers, Diamond Mountain sparkles in part shade -- or moonlight. It's a very attractive supporting player.

Hardy in zones 10 and 11, Diamond Mountain is right on the edge of its comfort zone in Sacramento's 9b, where it likely will die off due to winter frost. But I expect mine to keep blooming through November; since it stays pretty warm on the patio.

Diamond Mountain LOVED this Sacramento summer. It thrived in a large container with two other test plants, Angelface Steel Blue summer snapdragon (an Angelonia hybrid) and cascading Supertunia Vista Bubblegum (a highly rated pink petunia hybrid). All three are non-stop bloomers and complemented each other well. With its airy cloud of flowers, the euphorbia proved to be the head turner. Visitors wondered, "What is that?! "

Another plus: Diamond Mountain didn't get eaten by bugs. While snails chewed on the petunia and something else nibbled Angelface, the euphorbia grew untouched, thanks probably to its white latex sap. (That sticky sap can cause allergic reactions or skin irritation; wear gloves when working with this plant.)

Diamond Mountain has attractive foliage, too, that forms a softly mounded green pillow beneath the long-stemmed frilly blooms. It's such a delicate look for a very tough plant, and opened my eyes to euphorbia's potential. Next time I hear euphorbia, I won't automatically think spurge.

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Garden checklist for week of April 12

After these storms pass, get to work on spring clean-up.

* Weed, weed, weed! Take advantage of soft soil and pull them before they go to seed.

* From seed, plant beans, beets, cantaloupes, carrots, corn, cucumbers, melons, pumpkins, radishes and squash.

* Plant onion sets.

* In the flower garden, plant seeds for asters, cosmos, celosia, marigolds, salvia, sunflowers and zinnias.

* Transplant petunias, zinnias, geraniums and other summer bloomers.

* Plant perennials and dahlia tubers for summer bloom. Late April is about the last chance to plant summer bulbs, such as gladiolus and tuberous begonias.

* Transplant heat-resistant lettuce seedlings.

* Feed roses and other spring-blooming shrubs.

* April is the last chance to plant citrus trees such as dwarf orange, lemon and kumquat. These trees also look good in landscaping and provide fresh fruit in winter.

* Smell orange blossoms? Feed citrus trees with a low dose of balanced fertilizer (such as 10-10-10) during bloom to help set fruit. Keep an eye out for ants.

* Apply slow-release fertilizer to the lawn.

* Thoroughly clean debris from the bottom of outdoor ponds or fountains.

* Trim dead flowers but not leaves from spring-flowering bulbs such as daffodils and tulips. Those leaves gather energy to create next year's flowers. Also, give the bulbs a fertilizer boost after bloom.

* Mulch around plants to conserve moisture and control weeds. Avoid "volcano mulching" -- be sure to keep mulch a few inches away from tree trunks or the stems of shrubs. This prevents rot and disease.

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Food in My Back Yard (FIMBY) Series

Lessons learned during a year of edible gardening

WINTER

Is edible gardening possible indoors?

Hints for choosing tomato seeds

Starting in seed starting

Why winter is the perfect time to plant fruit trees

When to plant? Consider staggering your transplants

How to squeeze more food into less space

Potatoes from the garden

Plant a fruit tree now -- for later

Win the weed war by tackling them in winter

Tips for planting bare-root trees, shrubs and vegetables

Time to give vegetable seedlings some more space

Ways to win the fight against weeds

FALL

Dec. 16: Add asparagus to your edible garden

Dec. 9: Soggy soil and what to do about it

Dec. 2: Plant artichokes now; enjoy for years to come

Nov. 25: It's late November, and your peach tree needs spraying

Nov. 18: What to do with all those fallen leaves?

Nov. 11: Prepare now for colder weather in the edible garden

Nov. 4: Plant a pea patch for you and your garden

Oct. 27: As citrus season begins, advice for backyard growers

Oct. 20: Change is in the autumn air 

Oct. 13: We don't talk (enough) about beets

Oct. 6: Fava beans do double duty

Sept. 30: Seeds or transplants for cool-season veggies?

Sept. 23: How to prolong the fall tomato harvest 

SUMMER

Sept. 16: Time to shut it down? 

Sept. 9: How to get the most out of your pumpkin patch

Sept. 2: Summer-to-fall transition time for evaluation, planning

Aug. 26: To pick or not to pick those tomatoes?

Aug. 19: Put worms to work for you

Aug. 12: Grow food while saving water

Aug. 5: Enhance your food with edible flowers

July 29: Why won't my tomatoes turn red?

July 22: A squash plant has mosaic virus, and it's not pretty

July 15: Does this plant need water?

July 8: Tear out that sad plant or baby it? Midsummer decisions

July 1: How to grow summer salad greens

June 24:  Weird stuff that's perfectly normal

SPRING

June 17: Help pollinators help your garden

June 10: Battling early-season tomato pests

June 3: Make your own compost

May 27: Where are the bees when you need them?

May 20: How to help tomatoes thrive on hot days

May 13: Your plants can tell you more than any calendar can

May 6: Maintain soil moisture with mulch for garden success

April 29: What's (already) wrong with my tomato plants?

April 22: Should you stock up on fertilizer? (Yes!)

April 15: Grow culinary herbs in containers

April 8: When to plant summer vegetables

April 1: Don't be fooled by these garden myths

March 25: Fertilizer tips: How to 'feed' your vegetables for healthy growth