The Last On The Limelight Hydrangeas

Given that close to 7000 gardeners have read my last post on hydrangeas in the past few days, I am encouraged to write again.  I went back out last night to rephotograph my hydrangeas with a specific purpose in mind. How do I site them in the landscape, and how do I take care of them? I have a significant disclaimer up front. How I grow hydrangeas is not the be all and end all. How I grow them works for me.  What will work for you involves a lot of independent thought, trial, and error. I would be the first to suggest that you trust your own experience over mine. That said, first up is a discussion about how to grow and manage these big shrubs. No matter where you plant them, hydrangeas reward a gardener who is willing to prune. I only prune in the spring, when the buds are beginning to swell. Limelight hydrangeas that have gotten leggy and ungainly will respond to a pruning to within 18″-24″ above grade. Just be advised that a hard pruning is a restorative pruning that may take 2 years to bring them back up to heavy blooming stage. A yearly pruning down to 18″-24″ results in fewer, and larger flowers.

Want more flowers rather than large flowers? Prune the topmost branches shorter than the bottom branches-so every branch is exposed to the light. Prune several times early in the season to promote branching. Come mid May, I stop pruning.This hydrangea on standard has a beautiful branchy structure as a result of multiple pruning sessions. Notice how the flowers are much smaller than my hydrangeas at home? Post an early spring pruning, a lighter pruning over the course of a few spring weeks results in an embarrassment of riches in smaller flowers.

In love with the giant flowers? Prune vigorously. Pruning deciduous shrubs is not just a matter of style, and it certainly is not a matter of control. Pruning promotes growth that maximizes the opportunity for good blooming. A Limelight left to its own devices will have lots of growth on the top that eventually results in leggy and leafless lower branches.

Big shrubs do and will grow big. Harder pruning may result in a finished size and height at the low end of their growth range. Severe pruning-as in pruning right down to the ground, forces growth from below ground, from what are called basal shoots. I never prune hydrangeas that hard. I like having some old wood to support all those new branches to come. Pruning is all about what the future. The Limelights bloom on new wood – the current year’s growth. If you grow hydrangeas that bloom on the previous year’s growth, prune right after they bloom. This enables them to grow and set flowers for the season to come before winter. Leave them be until after they bloom the following year. But no matter what cultivar you grow, adequate light and water will reward your effort to grow them.

Hydrangeas are big growing shrubs with course leaves and giant flowers. This means they are eminently able to hold down a spot in the garden all on their own. But how does a gardener beautifully integrate them into a garden and landscape?  I make sure they have lots of company-both taller and shorter. My landscape can accommodate them at their full height. I have a much larger and taller hedge of arborvitae planted behind them. That dark green foliage highlights the flowers in a dramatic way.

There are several more layers of plantings in front of them. A hedge of Hicks yews whose health had been declining for years was removed. A series of planter boxes were put in their place. This years planting of nicotiana and angelonia is as loose and airy as the hydrangeas are solid and stiff. Companions to hydrangeas that have a looser habit of growth compliment them. A middle layer of loosely pruned taxus densiformis is faced down with clipped boxwood shapes. 4 layers of companionship is none too few for a shrub that grows 6-8 feet tall.

Limelight hydrangeas integrated into a garden

Limelight hydrangea hedge faced down with boxwood

Limelight hydrangeas faced down with anemone “Honorine Jobert”

hedge of Limelights as a border to a large group of mixed evergreens

These hydrangeas are pruned to keep them at a 5.5-6 foot height.

Between the large evergreens and the hydrangeas is a mass of boltonia asteroides.

Limelights and boxwood

Limelights in a garden

new planting of annabelles and limelights together

Limelights blooming top to bottom

Limelights massed in containers

My client’s containers featuring Limelights on standard are robust and showy this early part of September. We will heel them in the ground at our landscape yard late in the fall, and plant them back in these pots come spring. I do have clients who have and do winter them over in their containers.  I am not that nervy with plants that do not belong to me, but I am not surprised to hear this. Hydrangeas ask for little, and are so satisfying to grow.

 

 

 

 

 

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Hydrangea Time

I am somewhat embarrassed about how many posts I have devoted to hydrangeas over the past 8 years. Probably too many. The varieties, the care, the pruning-I have covered this shrub as if I were a preteen age groupie. I am embarrassed about my love for the whole lot of them, but so be it.  Show me a hydrangea – chances are I will fall for it. Nothing says summer in Michigan so clearly and grandly as the hydrangeas in full bloom. Once the hydrangeas come in to bloom, I am not my usual self. My love of geometry and simplicity fades away. The romance of hydrangeas is tough to resist. It is impossible for me to be critical of any summer blooming hydrangeas. Even those that flop over at the slightest threat of rain. Do not count on me to detail what is not to like about hydrangeas. I like them all without reservation.

I grow Limelight hydrangeas at home. They are so showy in bloom, and so easy to grow. Mine are 15 years old. They deliver their gorgeous blooms every year on time, in spite of a lackluster or hurried early spring pruning on my part – or that week that I forgot to water them. They are forgiving of any bad move on the part of a gardener. They thrive with a minimum of care. They give so much more than they ask. They endow my August garden with that special garden magic I call summer. I would not do without them.

My landscape is primarily evergreen.  I like that structure that is evident all year round. But the hydrangeas blooming in my garden speaks to the blooming great Michigan summer. To follow are pictures of my hydrangea bloom time at home.

The Limelight hydrangeas take my late summer garden to another level. I am sure there are other hydrangea cultivars that are ready and willing to take a garden and its gardener in charge over the moon. Do the research, and choose which cultivar fits in your garden. In general, I like shrubs. They provide mass and texture, bloom in both the spring and summer seasons, and fall color. If you are looking for some great shrubs for your landscape, the hydrangeas are a good place to start. Shrub it up – that garden of yours.

 

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Designing With Hydrangeas

hydrangeas-hedge.jpgThe last two posts focused on the cultivation of hydrangeas.  In short, what hydrangeas are available, and under what circumstances do they perform.  Most of them are easy to grow, and willing.  Some are marginally hardy.  Some are not at all hardy in my zone.  Some represent better than others.  Growing hydrangeas is a much different and much easier topic to discuss than designing with hydrangeas.  One could grow no end of them-as I do.  I have 50 in my front yard.  Putting them together in a coherent and satisfying way-this would be garden design.  A garden or landscape design implies an idea, a scheme, or a plan.  The purchase of a hydrangea is easy.  Designing a place for it in a landscape-not so easy.  Any plant that I have a mind to include in a landscape gets a thorough vetting.  By this I mean-what does this plant require?  How much space does it take?  Where will it thrive? How can this plant be integrated into the whole?  Once I have an idea for a space, is a hydrangea the best plant to express that idea?  The picture above depicts a planting of limelight hydrangeas, before the bloom.  This is the perfect moment to think over their addition to your landscape.  Flowers can be very seductive, and distracting.   A big growing coarse leaved shrub that needs plenty of space-that would be a hydrangea. A hydrangea planted in too small a space is like being occupied by an army-beautiful flowers notwithstanding. This is the simple and working description, not the romantic one.

limelight-hydrangeas.jpgFlowers are just but one aspect to consider.  There are the green times.  The winter times. The fall color.  The early spring. Make it a point to be intimately acquainted with anything you plan to introduce into the garden, should the overall design be important to you. This planting of hydrangeas works well with certain other elements in the landscape.  The yews are dense, and clipped.  The boxwood is denser, and more closely clipped.  The peonies have big leaves.  The lady’s mantle blooms at ground level in a sumptuous way.  The hydrangeas?  They preside over all-given their height and exuberance.  Hydrangeas have a density and bulky aspect that makes them ideal for garden situations where they cannot overwhelm their neighbors.  Small leaved or delicate perennials can be visually and physically overrun by a neighboring hydrangea.  Stout evergreen hedges can give a crisp look to a blowsy growing shrub.  Yews can help support the lax stems of hydrangeas.

Annabelle-hydrangeas.jpgAnnabelle hydrangeas will flop over in an instant.  If you plan to make them part of a landscape design scheme, stake them early.  This client loved the big growing rangy shrubs with their giant flower heads-but he equally loved the design of his landscape.  These Annabelles were staked first thing, in the spring.  The boxwood provides an orderly edge to the space.  They also provide some green interest in the winter months.

grass-border.jpgHydrangeas are big growing.  They need lots of space.  This planting of Annabelles has a grass border.  The slender simply textured blades of grass contrast and highlight the big leaves and rangy growth of the hydrangeas.  The ivy was part of an existing bed when we renovated the space-I did not see any reason to get rid of it. The texture of the grass with the hydrangeas is more pleasing than the texture of baltic ivy.

Annabelles-in-bloom.jpgThe flowers of hydrangeas are overwhelmingly beautiful. And overwhelming.  They need a big space to be.  They are a perfect match with massive architectural features, as a stone wall or flight of stairs.  Their sheer bulk, strong presence and white flowers makes them ideal for expressing a long sweep, or directional line in a landscape.  The white flowers make a great backdrop for other flowers, either perennial or annual.  Their height, which can be somewhat controlled by pruning, makes them ideal for facing down other larger landscape elements, like trees.

hydrangeas.jpgA hedge of Limelight hydrangeas is a soft way of defining a space.  You need the room to let them grow up to be what they are destined to be.  A long run of them can enclose a space, in a friendly way.

hydrangeas.jpgA landscape dominated by evergreens, and deciduous trees at a distance, can be leavened, brightened, by hydrangeas.  The leaf is a medium green, and the white flowers can be seen from blocks away.

hydrangea-border.jpgHydrangeas develop woody legs, over time.  Face them down with shorter growing ornamental grasses-or in this case, Honorine Jobert anemones.  Your design may ask for layering.  A design is not about this plant, or that plant.  It is about a community of plants, the interaction of all with the weather and the seasons.

hydrangeas-and-yews.jpgGreat design is intimately associated with the relationship a designer assigns from one plant to another.  The relationship of the plants to the space.  What defines that relationship?  Color, mass, texture, line, volume, weather-all of these design elements figure into the design of a landscape.  A design that accommodates, makes use of, and features the habits of the plants involved is design that is visually sensitive.

hydrangea-wall.jpg

The most important element in design?  The gardener in charge.  It is easy to grow hydrangeas.  It is much harder to design successfully with them.  But when the design plan is well done, a beautiful shrub goes on to help create a breathtakingly beautiful space.

Time For The Limelights

limelight hydrangeas

Summer blooming hydrangeas appeal to almost every gardener.  Each flower head is substantial.  Comprised of hundreds of tiny florets, a single cut stem is a bouquet that celebrates the beauty of the summer season. One shrub in full bloom delights the eye.  There are no end of cultivars-some white, some pink, some blue on occasion. They are broadly tolerant of a variety of conditions, but appreciate their fair share of sun, space, and water.  I plant Limelight hydrangeas, and the new dwarf version, Little Lime, more than any other variety. They are vigorous growers, and bloom reliably.  

summer flowering hydrangeas

My zone is a little too chilly and unfriendly for a good many hydrangeas.  This is just me talking, but I only have one westside client who has been successful in growing blue hydrangeas.  Her success is a mystery to me.  The pink flowering varieties, available in my zone are easy to grow, but so reluctant to bloom.  Sporadic bloom on a sizeable shrub makes me look like I don’t know how to garden.  My clients on the east side of the metropolitan area have no problem cultivating pink and blue hydrangeas. I can’t help but think Lake St. Clair mitigates seasonal extremes. 

hydrangea hedges

 I am satisfied to grow the hydrangeas that do well in my area.  This means Annabelle,and Limelight.  White hydrangeas, these.  They are easy to grow, and so willing to bloom.  Come June, the Annabelles delight every gardener with their snowballs.  My favorite place to site them is on a slope, as they are stubbornly floppy in habit.  Come the first of August, the Limelights transform the garden.    white flowering hydrangeas

Their greenish white conical flowers develope over a period of a few weeks.  Chubby, luscious,  and very large, the showy flowers dominate the summer landscape.  I have 25 or 30 of them in the ground at our landscape yard.  They are planted in gravelly soil, and make due with whatever water comes from the sky.  They are a quarter of the size of these plants; the flowers are tufts.  Plant hydrangeas in compost enriched soil that gets regular water.   

great shrubs for the landscape

 Large growing hydrangeas can be stalky-leggy.  Skillful pruning in the early spring can help keep them green and blooming to the ground.  But a good underplanting gives them a very finished look.  I like to face down most large growing shrubs with a smaller growing shrub or perennial.   Boxwood does a great job of concealing those inevitably gawky Limelight legs.  They do a better than great job of giving the hydrangeas some winter interes

hydrangea limelight

 This block of limelights is wedged in between a hedge of yews, and an L of boxwood.  In a different, cooler, and more rainy summer, the tops of those yews would be dark emerald green, rather than the color of toast.  But the lime green second flush of growth on the boxwood is a beautiful textural contrast to the hydrangeas.  No legs on display here.

white hydrangeas

 I prune my hydrangeas as soon as the buds swell in the spring.  I give them a shag haircut, by shortening the long branches on the top. I rarely prune the bottoms.  Heading back the long top branches allows light to reach the bottom. Good foliage and flowers requires good light.  It is so easy to see in this picture that the heaviest bloom is occurring where there is the most exposure to light.   

white blooming hydrangeas

 Limelights can be pruned as low as 24″-30″ in early spring.  Hard pruning produces fewer, but larger flower heads.  I prune my hydrangeas lightly, as I like them tall, and I like lots of flowers. They make a beautiful backdrop for this pot in August.  They hydrate the look of my summer landscape.

My blocks of hydrangeas are sequestered behind a pair of yew hedges-one formally pruned, another left shaggy.  Thuja nigra backs them up, and sets off the white flowers to good advantage.  This is the juciest moment I have had to date in my garden all season-you bet I am enjoying them.