Bigleaf Hydrangea (Hydrangea macrophylla Endless Summer® The Original) in the Hydrangeas Database

Trade name information:
Series: Endless Summer®
Trade Name: The Original
Cultivar name: 'Bailmer'
Common names:
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General Plant Information (Edit)
Plant Habit: Shrub
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Partial or Dappled Shade
Water Preferences: Mesic
Soil pH Preferences: Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 9b
Plant Height: 3 - 5 feet
Plant Spread: 3 - 5 feet
Leaves: Good fall color
Fruit: Dehiscent
Flowers: Showy
Blooms on old wood
Blooms on new wood
Other: Repeat bloom on new wood
Flower Color: Blue
Other: Color depends on soil PH.
Bloom Size: 5"-6"
Flower Time: Late spring or early summer
Late summer or early fall
Uses: Windbreak or Hedge
Cut Flower
Dried Flower
Wildlife Attractant: Bees
Propagation: Other methods: Cuttings: Stem
Cuttings: Cane
Pollinators: Bees
Containers: Suitable in 3 gallon or larger
Needs excellent drainage in pots
Miscellaneous: Patent/Plant Breeders' Rights: PP15,298 (2004)
Child plants: 7 child plants

Bronx Botanical Garden

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Posted by goldfinch4 (Ripon, Wisconsin) on Jul 9, 2012 12:33 PM

My 'Endless Summer' is a flower machine, blooming almost nonstop from early summer until frost. With the ph of my soil I get pink, lavender and blue flowers at the same time - it's beautiful! The flowers also dry nice and make for great fall arrangements.

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Posted by kqcrna (Cincinnati, Oh - Zone 6a) on Oct 23, 2011 5:36 AM

My Endless Summer hydrangeas bloom heavily in early summer, and sporadically through summer they produce occasional flowers. Hydrangea blossom color is blue in acidic soil, pink in alkaline soil, so you can change the color by amending your soil appropriately. They can easily be propagated by layering.

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Posted by Ispahan (Chicago - Zone 6a) on Jul 4, 2012 7:34 PM

This is one of the most over planted and unattractive plants in my area. Attractive specimens do exist, but they are few and far between. It usually looks rangy, weedy and the blooms are of a muddy, washed out color whether pink or blue. I have three established specimens that I am itching to take out and replace with another hydrangea that is more attractive and reliable, such as 'Annabelle' or 'Little Lime'. A truly inferior cultivar!

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Posted by sherrilosee (Bloomington, IN - Zone 6a) on Sep 9, 2012 7:42 PM

The blooms age beautifully!

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Posted by Catmint20906 (Maryland - Zone 7a) on Aug 23, 2014 7:02 PM

Hydrangea macrophylla Endless Summer® The Original was my first hydrangea, and several hydrangeas later it is still my favorite. It produces a bountiful supply of large blossom globes from early summer to fall. Each blossom retains its color quite well for an extended period of time. Moreover, because Endless Summer blooms on both old and new growth, it will bloom even following harsh winters that cause the shrub to die to the ground.

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Posted by frankrichards16 (Clinton, Michigan - Zone 5b) on Mar 2, 2018 7:14 AM

Found in a St. Paul garden (~1996) by Vernon Glen Black (an employee of Bailey Nurseries). Patented by Bailey Nurseries as Hydrangea macrophylla 'Bailmer' and marketed as Endless Summer® (PP15298, 2004). Eventually, this trademark grew into a series, so 'Bailmer' is now commonly called Endless Summer® The Original. It had the unique ability to dependably bloom on both old and new growth as far north as Zone 4. Michael A. Dirr from the University of Georgia developed three additional cultivars for the series.

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Plant Events from our members
Catmint20906 On May 27, 2015 Bloomed
piksihk On August 28, 2015 Plant Ended (Removed, Died, Discarded, etc)
piksihk On May 27, 2015 Obtained plant
Bunilla On June 2, 2016 Obtained plant
NikkiGerena On June 12, 2017 Transplanted
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Discussion Threads about this plant
Thread Title Last Reply Replies
Hydrangea macrophylla Lets Dance™ Rhythmic Blue by frankrichards16 Mar 12, 2018 5:55 PM 1
Endless Summer Hydrangea by AJR04 Feb 3, 2018 8:59 AM 13
'Frankly Scarlet' by Seedfork Jun 15, 2016 1:31 PM 18

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