What makes Invincibelle Ruby different from other smooth hydrangeas?
- unique ruby-red flower color
- strong stems prevent flopping
Name: Hydrangea arborescens 'NCHA3' pp#28,317, cbr#5623
Hardiness: USDA zones 3-8
Height + width: 3-4'
Light: Full to part sun
Soil: Any well-drained soil will do. Though dry conditions are unlikely to harm an established plant, prolonged drought will severely limit floral life.
Pruning: Blooms on new wood; prune back by one-third in late winter/early spring for better habit and a slight improvement in stem strength.
Water: Average water needs. Does not tolerate wet conditions.
Fertilizer: Fertilize once in early spring with a rose fertilizer if desired.
Bloom time: Early summer
Bloom color: Upper petal surface is pink, lower petal surface is red-pink, and the overall effect is indeed quite similar to a ruby gemstone.
Uses: If you are after a colorful flowering hedge that's super reliable and easy to care for, Invincibelle Ruby would be perfect. It's also very nice in beds, borders, and flower gardens, as well as planted in multiples to bring color, form, and lushness to home landscapes.
This super-hardy, super easy-to-grow hydrangea goes by lots of different names: smooth hydrangea, Annabelle hydrangea, wild seven bark, hills-of-snow hydrangea, wild hydrangea, native hydrangea, and probably a few more. Botanically, it is known as Hydrangea arborescens and it is native to much of the southeastern United States, from the south of Illinois to northern Florida and from New York state to Oklahoma. If you were to see a smooth hydrangea in the wild, though, you'd barely recognize it: naturally, its flowers are small and not very showy. It is thanks to avid gardeners and talented plant breeders that we have the big, colorful flowers that now characterize this practically fool-proof hydrangea.
Along with panicle hydrangeas, smooth hydrangeas are some of the most cold tolerant on the market, easily thriving and blooming even in chilly USDA zone 3. They are heat tolerant through about USDA zone 8, though can be grown in cool parts of zone 9, such as the Pacific Northwest.
With the recent work on the Invincibelle series done by Dr. Tom Ranney and his team at NCSU, the size range of smooth hydrangeas has gone from pretty much strictly 5'+ to a huge selection in the 2-3' range, and some as small as just 1-1.5' tall and wide. With a little research, you'll find the perfect variety for any space!
We recommend at least four hours of sun each day, or filtered light throughout the day. This makes a huge difference in the stem strength, as plants that are in too much shade will stretch toward the light, leading to thin, spindly growth that can't support the flower heads. For the pink varieties, sun also helps to bring out the purest, truest colors. Finally, in too much shade, you may find that mophead varieties don't fully develop and take on some characteristics of lacecap flowers. In hot climates, sun should only be in the morning, and during the hottest part of the day, they should be in shade.
Easy-going smooth hydrangeas aren't fussy about soil, but they do require it to be well-drained. They won't do well in soils that are too wet nor soils that are too dry. Soil pH is not an issue, as they can grow well in acidic to slightly alkaline conditions, and the color of the pink varieties will not change based on soil chemistry as they can for bigleaf and mountain types.
Smooth hydrangeas are naturally fast-growing, and need little to no supplemental fertilizer to do their best. One application of a granular (not liquid) rose fertilizer in early spring should be sufficient in most areas.
For many years, white was the only option for smooth hydrangeas, but that changed dramatically in 2010 when Proven Winners introduced Invincibelle Spirit hydrangea. It was the first-ever pink flowering smooth hydrangea. Since then, new and improved color options have been hitting the market, and now pure pinks, ruby reds, mauvey purples, and even greens are available. The color on these varieties is not impacted by the soil chemistry.
Smooth hydrangeas are one of the few types that bloom on new wood. This is one of the reasons why they are such a reliable performer even in cold climates! It's also what makes pruning them each spring the ideal way to maintain the plants, as it removes any thin buds at the tips of the stems and ensures the growth for the year comes from thicker buds that were created earlier the previous season.
Some people cut smooth hydrangeas like 'Annabelle' all the way to the ground. However, we recommend cutting the entire plant back by about one-third its total height in early spring. You can also remove any thin side branches at this time, as well as any wood that's not showing signs of life. If you prefer, you can do this in late autumn/early winter, you'll just want to wait until the plant is completely dormant before pruning. Our preference is generally to prune in spring, because this leaves the dried flower heads in place all winter, which are much nicer to look at than a bunch of cut-off branches. The plant will not be harmed with late autumn pruning if that's what you prefer.
Smooth hydrangea problems
Largely problem-free, any issues you do see on your smooth hydrangeas are most likely cultural - due to some conditions the plant is experiencing that aren't ideal for growth. That said, there are a couple of issues that may arise that you should know about.
The leaf spots that impact other hydrangeas are usually fungal in nature. However, the most common leaf spot for smooth hydrangeas is actually bacterial. It can be avoided in the same way as fungal leaf spots: avoid overhead watering, provide good air circulation, keep the plant free of stress, and remove any affected foliage when it falls in autumn.
There's only one insect that you are likely to find causing damage on a smooth hydrangea, and that's the hydrangea leaf tier. That's "tie-r," as in, "one who ties," because this little caterpillar makes itself a snug little home in the leaf shoots so that it can feed safely on the developing foliage. These native insects rarely cause any issues for the plant, but once the caterpillar develops into a moth, you may see the foliage is slightly disfigured. If you see the leaves clasped tightly together at the ends of the branches, you can peel them open and smash the green larvae.
Deer cause major issues for smooth hydrangeas: they especially love to eat the flower buds and may eat them before they are even noticeable to the human eye. They also eat the foliage, and smooth hydrangeas tend to be the type that are most severely damaged by deer. If you have deer in your yard, plants should be protected with netting or a spray, and this protection will need to be repeated - maturity does not seem to deter them.
NO RISK 30 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. If for any reason you are dissatisfied, notify us within 30 days of receipt of your order and we will refund you.
FALL GUARANTEE – SHIPPING FROM SEPTEMBER 1 – END OF FALL SEASON
Notify us within 7 days if you have a concern about orders shipped in autumn so we can make a note of it. Warranty on such plants is extended to May 31 of the following year. Our fall guarantee does not cover plants that are not hardy (i.e., able to survive winter) in your area, so please verify your USDA hardiness zone (click ‘Growing Zone’ in the site navigation and enter your zip code) before purchasing. If you have questions about whether a plant can survive winter in your area, please call us before purchasing. See Product Care section below for additional information.
OUR LARGER ROOT SYSTEMS
We ship jumbo size 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 30 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.
They were packaged/shipped with care! The plants were bigger than I expected and very healthy looking. These hydrangeas are doing great in my garden and I have a few small flowers as well, which is a wonderful surprise. Beautiful color. This is my first purchase with this company and I do very little plant ordering online. I am very happy with my purchase and highly recommended them to any gardener!!
My hydrangea plants arrived in great condition and are now thriving in the flower bed. I can't wait to see them bloom next year.
I am surprised out how well the plants have shipped. I have ordered between 25 and 30 plants this year. I am so pleased.
My five Invincibelle® Ruby Smooth Hydrangea came arrived looking a bit hot and thirsty, but perked up after watering. They are settling in and blooming nicely.
My Invincible Ruby is doing amazing! It has one full bloom with another small one. I purchased 2 more three weeks later & they are healthy as well. Love them! I couldn't find this plant local, very happy to have some. Since my first Invincibelle Ruby I have purchased 7 other plants. All of them are thriving!