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May 26, 2016
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Rhododendrons - Singing Tree Gardens
Genus: Rhododendron
Black Widow
('Frank Gallsworthy' x 'Leo') x 'Warlock'
A "black-maroon" flowering rhododendron that is better than the photos or the descriptions. We finally have some plants to sell of this brand new hybrid from the Thompson Nursery in Oregon. To get this color, Roy Thompson crossed the very dark purple hybrid 'Frank Gallsworthy' with a dark red hybrid named 'Leo'. Then, after selecting the darkest flowering plant from this batch of seedlings, he was able to make the cross with 'Warlock', a very dark maroon rhododendron. The results couldn't be better. Everyone who sees this plant in flower is quite impressed. Not recommended for hot, humid climates.
  New Hybrid
Bloom Time:
  Partial Shade
Size in 10 yrs:
  4ft - 5ft tall
  -5 deg F H3
Growth Habit:

email me when it's back in stock

Rhododendrons have been called the "King of Shrubs" because they put on the biggest flower show of any plant species. They come in all colors of the rainbow, and some are very fragrant! We have listed our offerings by color, fragrant rhododendrons, new hybrid rhododendrons, and species rhododendrons to make it easy for you to find what you want for your garden. Some of these plants are tender; so check your zone to see if you can grow them where you live. We want all of you to be successful growing these wonderful shrubs, so we are offering helpful information that should green up your thumb. Go to our Plant Care section and learn about the best placement and exposure for rhododendrons. Discover how to plant and provide the best conditions soil-wise and light-wise to achieve growing and flowering success. You will find out the importance of feeding for flower bud development. Pruning rhododendrons will be de-mystified, and you will learn when and how to move or transplant that favorite plant you grandmother planted. We hope our website will inspire you to try growing some of these exceptional and long-lived plants.

Rhododendron Hardiness Chart
American Rhododendron Society
Rhododendrons Azaleas Conifers Heather Hydrangea Grasses Trees Shrubs More
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