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Diamond Mountain® Euphorbia hybrid

Flower Season
  • Spring
  • Summer
  • Fall
Mature Size
3' 3' 91cm 91cm
Height: 2' - 3'
Spread: 2' - 3'
Height: 61cm - 91cm
Spread: 61cm - 91cm
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  • Details

    24 - 36 Inches
    12 - 18 Inches
    24 - 36 Inches
    61cm - 91cm
    30cm - 46cm
    61cm - 91cm


    Heat- and drought-tolerant plants; clouds of airy white flowers all season; low maintenance.  Much larger plants than Diamond Frost® with a great landscape presence and perfect for mixing with other vigorous plants.

    Award Winner
    Continuous Bloom or Rebloomer
    Long Blooming
    Heat Tolerant
    Deadheading Not Necessary
    Drought Tolerant


    Plant Type: 
    Height Category: 
    Garden Height: 
    24 - 36 Inches 61cm - 91cm
    12 - 18 Inches 30cm - 46cm
    24 - 36 Inches 61cm - 91cm
    Flower Colors: 
    Flower Shade: 
    Foliage Colors: 
    Foliage Shade: 
    Container Role: 

    Plant Needs

    Light Requirement: 
    Part Sun to Sun

    The optimum amount of sun or shade each plant needs to thrive: Full Sun (6+ hours), Part Sun (4-6 hours), Full Shade (up to 4 hours).

    Maintenance Category: 
    Bloom Time: 
    Planting To Frost
    Hardiness Zones: 
    10a, 10b, 11a, 11b
    Water Category: 
    Border Plant
    Mass Planting
    Uses Notes: 

    Plant in landscapes, containers or large combinations that include other very vigorous plants.

    Maintenance Notes: 

    Diamond Mountain might look delicate and frilly, but nothing could be further from the truth. Diamond Mountain is actually pretty much tough as nails. She has performed well from North to South and coast to coast. While she does best in sun or part sun conditions, she does surprisingly well in shady conditions also. As you might suspect she is great in mixed containers and containers by herself, but don't discount her excellent performance when planted in the landscape. She needs little to no supplemental water and is extremely heat tolerant. She doesn't need to be deadheaded and shouldn't need much in the way of fertilizer either - she's a very self-sufficient gal. While you shouldn't need to trim her back, you can trim her back at anytime and she will just keep doing her thing.

    Self-cleaning, no deadheading necessary.

    Some shedding of flowers and leaves may occur indoors depending on light levels and watering.

    Plants in the spurge family often will bleed a milky, white sap if cut or wounded. This sap is a form of latex. Most people will have little or no reaction due to sap exposure from the euphorbia that Proven Winners sells. However, people with sensitive skin or latex allergies should be cautious when handling euphorbia. Poinsettias are in this same family. If you have ever experienced a skin irritation due to contact with poinsettias you should be cautious with all euphorbia.

    An application of fertilizer or compost on garden beds and regular fertilization of plants in pots will help ensure the best possible performance.

  • 3 Reviews

    Browse reviews from people who have grown this plant.
    • Very beautiful plant. Planted 6 under maple in shade along with other shade loving plants. Theme is white, pink, purple and their shades. People stop by to admire that patch. DM just make it more dreamy. I'm going to buy DM forever

      , 2 years ago
    • Diamond Mountain Euphorbia has been nothing short of spectacular this year in two of my large containers. I expected a lot from them and they did not disappoint! It is October 4th in NJ and they are still going strong. Visitors to my home stop in their tracks when they see this plant!

      Kathleen Towle
      , New Jersey
      , United States
      , 4 years ago
    • Such a nice filler in my hanging baskets! The honeybees love it too

      Jennifer Winship
      , British Columbia
      , Canada
      , 4 years ago
  • 20 Awards

    Award Year Award Plant Trial
    2018 Perfect Score All Season University of Minnesota - Morris
    2018 Top Performer University of Guelph
    2018 Top Performer Ohio State University Extension - Springfield
    2018 Top Flowering Annuals for Warm Weather Mississippi State University - Poplarville
    2018 Top Performer Penn State
    2018 Top Performer University of Georgia
    2018 Top Performer Colorado State University
    2018 Highlight Plant Mississippi State University - Poplarville
    2018 Zoo's Best Cincinnati Zoo and Botanical Garden
    2018 Top Performer South Dakota State - McCrory Gardens
  • 4 Recipes

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