Endless Summer® Summer Crush® Bigleaf Hydrangea

SKU: 327

Size: One Quart
More information on plant sizes.
Sale price$21.99
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Bigleaf hydrangeas are the one that comes to mind when most people think of a hydrangea - they're the ones with the big, round flowers in blue, purple, or pink. Unfortunately, they're also the ones that most people have had the most difficulty growing successfully, because even though the plant itself can tolerate cold conditions, the flower buds - which are kept on the plant all winter long - can be damaged by extreme winter cold and spring frosts. Our guide here will help you understand how to properly site, grow, and care for a bigleaf hydrangea, ending hydrangea disappointment for good!


Bigleaf hydrangeas are cold tolerant to USDA zone 5 and heat tolerant through USDA zone 9. They are native to mild coastal regions of Japan, and this is one reason why they are so associated with seaside areas in North America as well. While a bigleaf hydrangea plant can survive USDA zone 5 (and many even USDA zone 4), the problem that often arises in these areas is that the flower buds, which are present on the plant during winter, can be damaged by cold. If this happens, poof! There go the flowers for the year - hence the high level of confusion and disappointment associated with these beautiful plants.

Siting (in other words, where in your yard you plant something) can make a huge difference in your success and satisfaction with these plants. In cold climates, plant them where they are protected from frigid Westerly winds and weather, such as on the east side of your home, or surrounded by walls or other structures. In hot climates, planting where the hydrangea will be completely shaded during the hottest part of the day is key to keeping the plant happy and stress-free.


Old-fashioned bigleaf hydrangeas can reach large proportions, around 5-6' in much of North America. This large size often results in people pruning them to try to control the height, and that removes flower buds, once again resulting in a non-flowering plant. Fortunately, there are lots of smaller, more compact varieties available these days which allow people to plant hydrangeas where they want them without having to prune them and risk losing flowers. When it comes to planting a bigleaf hydrangea, it's crucial to select the right mature size for the site so that you don't need to prune them at all.


In USDA zones 4-6, bigleaf hydrangeas can take full sun, especially if they are mulched, and/or if they get regular irrigation. In USDA zones 7-9, a bit of morning sun or filtered light all day is best, and plants should absolutely be planted where they will get shade during the hottest part of the day. Though many people do think of bigleaf hydrangeas as shade plants, some sun each day will result in the best flower color, strongest stems, and ultimately, more abundant flowering as well.


Moist, well-drained soil is best for bigleaf hydrangeas. They wilt easily, so a steady supply of moisture will keep your plant looking its best. A good 2-3" layer of mulch is also really crucial in all climates, all year-round. As for soil pH, it is a myth that bigleaf hydrangeas require acidic soil - they can actually grow well in acidic to slightly alkaline (pH 7.5+) soils. The pH of the soil impacts the flower color of most varieties, however - scroll down to the color section for more information.


An application of a granular rose fertilizer in early spring is recommended for all bigleaf hydrangeas. In areas of extreme pH, either acidic or alkaline, yellow or pale leaves may develop and fertilizer will mitigate that. Fertilizing monthly from early spring through late July is recommended for reblooming bigleaf hydrangeas, as this goes a long way toward encouraging the consistent, vigorous growth that is required for the formation of new wood flowers later in the season.

Flower Color

The color of bigleaf hydrangea flowers can famously vary from blue to pink, depending on the soil. Many think that blue flowers develop in acidic soils, and pink in neutral to alkaline soils, and while that is true, it's not the whole story. There also must be aluminum, a mineral that naturally occurs in many soils, present, for blue color to develop. So it is completely possible to have acidic soil and not get blue flowers due to the absence of aluminum. Generally speaking, the color that you see in other bigleaf hydrangeas in your neighborhood or town can indicate what color hydrangeas planted in your yard will bloom with.

It's important to note that whether you are buying a bigleaf hydrangea online or in a garden center, it will most likely bloom pink unless it was specifically treated to bloom blue. This is because commercial growing media does not contain aluminum. However, a year or so after planting, the flower color will reflect the conditions of the soil you planted it in.


Great news! In general, you should avoid pruning bigleaf hydrangeas entirely. Because they bloom late in the season on old wood, there is no time that they can be pruned without negatively impacting flowering either during the current season or the following one. It is okay to remove entire branches of bigleaf hydrangeas, however, they should never be cut back or trimmed the way you might other shrubs. Even if you have a reblooming bigleaf hydrangea that blooms on both old and new wood, you should treat it as a strictly old wood blooming type and avoid pruning it. This ensures the most possible flowers.

In cold climates, once the new growth begins to appear on the stems, you may find portions of the stems that have died. These can be pruned off just above where the new growth can be seen. If your plant has lots of dead wood year after year, that may indicate the spot where it is planted isn't suitable for a bigleaf hydrangea, and you should consider moving it.

Bigleaf hydrangea problems

Like most hydrangeas, bigleaf hydrangeas are largely unbothered by pests and diseases, and the ones that do occur are rarely serious. Here are a few issues to look out for.


Some bigleaf hydrangeas, particularly older varieties, are susceptible to powdery mildew. This can be managed by providing good air circulation (move any plants that are crowding it), avoiding pelting the leaves with water when you irrigate, and cleaning up any fallen foliage in autumn, as the mildew spores will overwinter on it and re-infect the plant the following spring if conditions are right. If your plant consistently gets powdery mildew in its spot, consider moving it.

Bigleaf hydrangeas also get other leaf spots, like alternaria and cercospora. These similar-looking fungal leaf spots manifest as brownish-purple dots on the leaves, ranging from tiny to quite large. They usually become more apparent later in summer, and particularly if a plant becomes stressed. These diseases can be managed in the same manner as for powdery mildew above.

Insect pests

Bigleaf hydrangeas are generally unbothered by insects. Any chewing that is seen typically does not require management of any kind.

Other animals

Slug damage is common on bigleaf hydrangeas, especially those in moist, shaded areas. Slugs can be trapped and discarded, or tolerated - they usually only bother the portions of the plant closest to the soil. 

Deer are often an issue for big leaf hydrangeas, and though they rarely cause serious damage to the plant, they often eat the flower buds in spring. If deer are an issue in your area, protect plants with a repellent or netting to ensure you get a good bloom.


We've got you covered with our 60-day guarantee. We guarantee that you will be satisfied with your purchase and that your plants will arrive healthy, free of pests and diseases, and true to name.

Have a problem with your plant? We make it easy to place a claim via email or use the chat bubble. Simply send us a photo of your plant, your order number, and a brief description of the problem within 60 days of receipt of your order. Orders from US are eligible for refund or replacement; Canadian orders are eligible only for refunds. All refunds are based on the plant cost and do not include shipping charges. Allow up to 2 weeks for processing refunds.

After 60 days, we cannot be responsible for the plants in your care and will not cover problems with overwintering, animals, insects, diseases, improper planting, drought, flooding, poor drainage, etc. Our goal is that you are successful with our plants (and gardening in general), so our expert staff is here to assist you with any problem you may experience.

Any plant shipped dormant in spring is guaranteed to break dormancy, even if it takes longer than 60 days.

Please note: our guarantee does not cover plants grown outside of their recommended growing zones. Verify your USDA zone by clicking 'Growing Zone' in the site navigation and entering your zip code before purchasing.


Did you receive an order after September 1? If so, it falls under our fall guarantee. We want to ensure your plants establish in your garden and return the following spring. Therefore, the warranty on your plants is extended to May 31 the next year. Ensure you contact us with images, your order number, and a description of the problem before May 31.


We ship plants with hefty root systems that outperform smaller plants obtained from other mail-order nurseries.


We take great pride in our packaging.  Please contact us immediately for any damaged boxes or shortages.  (Please note: multiple boxes shipped by Fed Ex might not always arrive the same day)


Any plant shipped dormant in the spring is guaranteed to break dormancy even if it takes more than one month. Call us directly if you have any concerns.


Photos of the plant(s) will be required so that we may provide the best assistance possible


A plant refund is based on the plant cost less discounts and shipping charges.  Allow up to 2 weeks for processing. We reserve the right to request a return of an item.


After 60 days, we cannot be responsible for product that is in your care. This includes overwintering, animals, insects, diseases, poor planting, plants beyond their hardiness zone, drought, flooding, etc. Our expert staff is here to assist you with any problem you may be experiencing. Our goal is that you are successful with our product.

Customer Reviews

Based on 6 reviews
Suella W.
Blooms first year!

Love it. Received two months ago already producing blooms

We're beautiful

I bought 2 of these. I was picturing where I was going to place them. Placed them on my front porch and they were both dead within 3 hours. Shocked me! I planted one outside and kept the 2nd inside after cutting the dead off, we'll see 👀 😒

Hello! It's hard to know exactly what is happening without some more information and photos of the plants. However, we're always here to help out. Please email a few photos of the plants to info@greatgardenplants.com and we can take a look a what might be happening. Happy Gardening!

Karen C.
Thriving plants!

As always, I appreciate the care that goes into packaging the plants for delivery and they always arrive on time looking very healthy! It’s nice that the packaging is mostly cardboard and they limit the use of plastics. The hydrangeas are in the ground and doing well, looking forward to seeing them bloom next year!

Beautiful Pink Flowers - Year 1

2020 ordered 4 each. They arrived in great shape and loved the packaging - never seen it quite so well done. All 4 blossomed first year planted.

July 2021 all four are still alive - 2 are in full blossom, 2 are working on it (see pictures). I know nothing about gardening and growing anything is not my gifting. I am typically good at killing plants so that fact that these are still alive is frankly surprising. These are planted quite close together because as I said, I didn't expect them all to survive - not because of the quality of the plant - but the quality of my ability to keep plants alive. I have made a point to make sure they are watered and I am working on installing an irrigation system. These are planted in middle of Michigan, in miracle grow ground dirt mixed in with a little of our heavy clay down to 2-3 feet deep and covered with 3" of mulch. They are in full sun in the mornings till about 3-4pm then shaded by the house. These are small right now but full and dense - they were full and dense when they arrived last year.

IN THE BLUE POTS ARE NOT GREATGARDEN - I also purchased 2 ea Summer Crush Hydrangea's from NatureHill.com at the same time for 3x the price each. They are currently also in bloom but are tall and lanky - they were tall and lanky when arrived. I overwintered these from Naturehill in their pots in a pole barn because I didn't know where to plant them being so drastically different and the lanky-ness is not what I'm hoping for.

If you're looking for full and dense with beautiful pink blossoms - that start out small... These are for you.
If you're looking for tall and lanky for 3x the price each, go with Naturehill. They still have pretty pink blossoms and maybe someday they will fill in or maybe it's me and I just don't know how to do whatever you need to do to make them full and dense.

I'm in the process of ordering 4 more.

4 hydrangea plants that were dry and dead

I was so excited to receive my plants and from the pictures that were advertised . I expected plants that would blossom this year or at least have blossoms on them when they arrived. That was not the case at all. The plants were dry and dead and not able to regrow as I would expected. When paying over $100. I would like to receive plants that would survive the hot summer months. These were dry and died within the first week after planted.

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