Endless Summer Big Leaf Bailmer Hydrangea

Proven reblooming performance: Flowers on both old and new wood for reliable color all season
Classic hydrangea blooms: Large, showy mophead flowers in blue or pink tones
Cold-hardy resilience: Maintains blooming ability even after tough winters
Versatile landscape use: Ideal for borders, foundation plantings, and mixed beds
Extended bloom time: Provides vibrant color from late spring through fall

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We guarantee that your plants and trees will arrive happy and healthy. If you’re not satisfied after receiving your trees and plants, we’ll replace them at no cost to you. Trees and plants are living organisms and require care, maintenance, and protection to survive, root in, and establish properly. Trees that do not survive despite receiving the proper care, maintenance, and protection within the first year will be considered for a one-time replacement. If you purchased plants outside of your growing zone recommendation, or have not properly cared for your new plants as described in your welcome letter, your purchase won’t be covered by our Grasshopper guarantee.
FREE Local Delivery

Grasshopper Gardens offers free home delivery to customers in our local service areas. Experience the convenience of having your plants delivered straight to your home, free of charge, saving you time and effort.

Our local delivery area reaches as far north as Schroon Lake, south to Voorheesville, Glenmont, and East Greenbush areas, parts of Fulton and Montgomery counties, much of Washington County, and all areas in between. If you have questions on local delivery, give us a call at

518-793-9623.
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518-793-9623

Endless Summer Big Leaf Bailmer Hydrangea

Sunlight
Can grow in a range from full sun to partial shade. They need at least six hours of direct, unfiltered sunlight per day.
Watering
Regular watering schedule for the first six months. Once established, rainwater should be sufficient.
Fertilizing
Should not need any extra fertilizer unless your entire lawn and garden have problems and needs regular fertilizing.

Endless Summer Big Leaf Bailmer Hydrangea

A groundbreaking reblooming hydrangea that delivers reliable blooms all season long, even after harsh winters. Endless Summer® ‘Bailmer’ is prized for its ability to flower on both old and new wood with classic blue or pink mophead blooms.

General Information:

Botanical Name: Hydrangea macrophylla ‘Bailmer’
Plant Type: Deciduous flowering shrub
Mature Height: 3–5 feet
Mature Spread: 3–5 feet
Growth Rate: Moderate
USDA Hardiness Zones: 4–9
Sun Exposure: Full sun to partial shade
Flowering and Flower Color: Large mophead blooms from late spring through fall; flowers are blue in acidic soils and pink in alkaline soils

Geographic Guidance:

Performs well across a wide range of climates, including the Northeast, Midwest, Mid-Atlantic, and Pacific Northwest, as well as other regions within USDA Zones 4–9.

Why Choose This Plant?

Enjoy dependable, long-lasting blooms with one of the most trusted reblooming hydrangeas available.

Proven reblooming performance: Flowers on both old and new wood for reliable color all season
Classic hydrangea blooms: Large, showy mophead flowers in blue or pink tones
Cold-hardy resilience: Maintains blooming ability even after tough winters
Versatile landscape use: Ideal for borders, foundation plantings, and mixed beds
Extended bloom time: Provides vibrant color from late spring through fall

Complete Care & Growing Guide

Light Requirements

Prefers morning sun with afternoon shade, especially in warmer climates. Tolerates more sun in cooler regions.

Soil

Thrives in rich, well-drained soil. Soil pH influences flower color—acidic soils produce blue blooms, while alkaline soils produce pink.

Watering

Requires consistent moisture, especially during hot weather and bloom periods. Avoid allowing soil to dry out completely.

Planting & Care

1. Planting: This is a large landscape tree and as such, requires a bit of planning before planting. First, measure the area where you would like to plant your hedge or row. You will need the length of the area of planting to estimate the number of trees you need.

When planting, dig a hole for each tree that is three times as wide as the root ball but just as deep. Place the tree, fill in around the tree with the same soil you took out when initially digging the hole. Finally, tamp down as you fill to cut back on any air pockets from forming, water the tree, then mulch to conserve moisture.

2. Watering: For the first two weeks, water your new tree every other day by holding a hose around it and counting to 20. If you don’t have a hose, 2 large watering cans full of water will do (smaller trees may only need a light soaking so a single can may suffice).

Related Resources

FAQs

What makes Endless Summer® ‘Bailmer’ different from other hydrangeas?

It was one of the first hydrangeas bred to bloom on both old and new wood, ensuring consistent flowering.
Can I control the bloom color?

Yes, adjust soil pH to influence whether blooms are blue (acidic) or pink (alkaline).
Will it bloom after a harsh winter?

Yes, its reblooming nature allows it to produce flowers even if old wood is damaged.

Shipping Details

Estimated Shipping Time: Most orders ship immediately. As noted on the website, some items are seasonal, and may only ship in spring or fall. Once your order is shipped, you’ll receive an email with a tracking number.

Amount of Order	Shipping Charge
Local Delivery	FREE SHIPPING
Non-Local Delivery	Varies based on UPS shipping

Mature Height	Medium: Up to 4 ft
Mature Spread	0-5 ft
Growth Rate	Fast, Moderate
Botanical Name	Hydrangea macrophylla
Bloom Time	Late Summer, Mid Summer
Deer Resistant	Usually
Family	Hydrangeaceae
Flower Color	Blue/Purple, Pink
Hardiness Zones	4, 5, 6, 7, 8, 9
Light Needs	Full Sun, Partial Sun
Maintenance	Low
Size	#3 Container

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Mature Height	Large: Up to 6 ft	Large: Up to 6 ft	Large: Up to 6 ft	Small: Up to 15 ft	Extra Large: Above 6 ft	Large: Up to 6 ft
Mature Spread	0-5 ft	0-5 ft	0-5 ft	5-10 ft	5-10 ft	5-10 ft
Growth Rate	Fast, Moderate	Fast, Moderate	Moderate	Fast, Moderate	Moderate, Slow	Fast
Bloom Time	Mid Summer	Mid Summer	Early Spring	Early Summer	Late Spring, Early Summer	Late Spring
Deer Resistant	Usually	No	Usually	Usually	Usually	Usually
Family	Hydrangeaceae	Hydrangeaceae	Adoxaceae	Rosaceae	Oleaceae	Rosaceae
Flower Color	Pink	Green, Pink	White	Pink	Blue/Purple	White
Hardiness Zones	3, 4, 5, 6, 7, 8	3, 4, 5, 6, 7, 8	3, 4, 5, 6, 7, 8	3, 4, 5, 6, 7, 8	3, 4, 5, 6, 7, 8	4, 5, 6, 7, 8
Light Needs	Full Sun	Full Sun, Partial Sun	Full Sun, Partial Sun	Full Sun	Full Sun	Full Sun
Maintenance	Low	Low	Low	Low	Low	Low