Rock rose (Pavonia lasiopetala): A Seasonal Look

If you’re a fan of pink, this is the post for you!

Rock rosePavonia lasiopetala, is a small shrub adorned with blooming Barbie-doll pink flowers through much of the growing season.  In my Austin garden, the first blooms appear in late April, with stragglers showing up as far into the calendar year as early December.  The charming hibiscus-like flowers,

…framed by fuzzy, scalloped foliage, are congenial and reliable garden partners.  A water-wise perennial shrub, Rock rose flowers are visited by many winged things:  butterflies, bees (both native and honey), and hummingbirds.  I guess all that pollination activity explains why they seed out so readily–I always have many seedlings to share.

Honeybees and several varieties of native bees regularly work the blooms. Most of the butterflies who visit Rock rose blossoms are smaller skippers and hairstreaks.

With its mallow blooms ranging from subtle, sweet pink,

…to garish, stopp’em-in-their-tracks pink,

…this shrub is a must-have for anyone gardening in Central Texas and southward into Mexico.

Masses of blooms

A single flower paired with blooms-about-to-happen. Rock rose isn’t a host plant for any insect that I’m aware of, but someone’s been nibbling at these leaves.

 

In winter, Rock rose retains some of its leaves, but definitely thins out;  I guess I’d label it as semi-evergreen.  I typically wait until late February to prune back  the shrubs to about 10-12 inches in height.  In fact, I just completed this winter chore.

Look closely to see the nearly naked limbs of February just-pruned Rock rose shrubs.  This garden boasts a cluster of Rock rose shrubs which border a walkway.

As with all things winter in my zone 8b garden, now is a good time to prune and clean out garden detritus which has accumulated.

The leaves of my American sycamore, Platanus occidentalis tangle in the web of Rock rose limbs.

 

Throughout March and April, the foliage will return–vigorous and verdant–ahead of the rosy charmers.

This is an April shot of several Rock rose shrubs bordering a walkway.

The first set of blossoms sprout in spring, blooming prolifically through summer, depending upon rainfall and /or irrigation.

Opening at dawn, the flowers remain available for critter pollinating and gardener viewing until afternoon, when they shutter their petals for the night.  As summer temperatures creep upwards, the blooms close earlier, often by mid-afternoon.  This is especially true of those growing in full sun. Well, why not??  It’s hot out there and closing the flower shop early in the day is how these plants conserve moisture during the dry, toasty summer months.

Because Rock rose produces masses of flowers, with heaps of seeds following, I typically prune a second time, by about one-third, sometime between  May and late June, depending upon rainfall.  I do this for two reasons: one–to limit seed dispersion after blooming (read: a good, old-fashioned “dead-heading”);  two–to shape the shrubs and encourage new growth.  Rock rose blooms on new wood, and if the gardener prunes the shrub 2-3 times in the growing season, the plants look tidier.  That said, I’ve seen many Rock rose shrubs go unpruned during the growing season and the worst result is that they’re leggy and floppy and produce multitudes of seeds, resulting in more Rock rose plants.

That’s not a bad thing.

Flowers open alongside developing and developed seeds.

Rock rose is a stellar summer bloomer, even during drought, but the flower show  declines unless there’s measurable rainfall.  In the driest period of summer, supplemental watering is appreciated, but Rock rose is a water-wise plant and thrives without much irrigation.

I  prune once more in late August, ahead of the autumn rains, shorter days, and the promise of cooler temperatures.  This readies the pink wonders for their autumn show!

As the temperatures cool in autumn, the flowers still open early, but  stay open until sundown.

I like Rock rose planted in groups of three, or more.  This maximizes visual impact in the garden and pollinators have plenty of pink to partake of.   It combines beautifully with other plants:

Rock rose paired with Katie’s Dwarf Ruellia.

One of my favorite combinations is rosy Rock rose planted with sunshine yellow Zexmenia (Wedelia acapulcensis var. hispida).

Rock rose, Zexmenia, and Purple coneflower (Echinacea purpurea) are a winning combo in spring and summer.

 

Rock rose performs best in full sun, but handles significant shade, with diminished flowering; I wouldn’t recommend it for deep shade. Shrubs growing in shade (and sometimes, those in sun) may develop mildew on the foliage.  Typically, the mildew resolves and other than temporary unsightliness, isn’t an issue, but it’s something the gardener should consider when choosing to plant this perennial.  When it happens, I prune offending shrubs and the foliage rebounds.

Another issue with Rock rose is its proclivity for seed production.  If you grow this shrub, you will have Rock rose babies each year.

A volunteer Rock rose beside the pond.

The Rock rose which border the raised bed are all volunteers. They’ve grown out of the crack between the retaining wall and the driveway.  Even in full, west sun, these Rock rose shrubs never wilt.  Who knew that concrete is such an effective mulch?

You can pull seedlings and compost, transplant them elsewhere in your garden, or give them away.  More than likely, you’ll do all three of those things.  The seed bounty of this native plant–while annoying–is a gift.

From left to right:  two open blooms, a bloom about to open, a newly closed bloom with developing seeds, and in the background, a seedhead with seeds nearly ready to disperse.

When my shrubs develop this many seedheads, I grab my Felco pruners and have at it!  I prune the branches as little as 4-5 inches to as much as 12 inches, all depending upon how big I’ve let my shrubs get (ahem!).  The goal is new stem growth and a new set of blooms.

The seeds in the middle of this photo are ready for dispersal.

Newly formed seeds (green) and mature seeds (brown).

As well as providing for pollinators, I have witnessed various finches nibbling at the seeds, so Rock rose’s worth for wildlife extends beyond the blooms.

For those gardening with deer guests, Rock rose is only mildly deer-resistant.

Rock rose is not a long-lived shrub.  I’ve read that individual plants live approximately 5 years.  I can vouch that some of my plants have died at around 5 years, but most have lived far longer.  If you notice foliage turning yellow and  withering as if needing water (and you’ve irrigated or have had rain), don’t try to save the plant–it’s done.  Your best bet is to yank it out and plant one of the many seedlings which have popped up in your garden.

Rock rose is a lovely, tough, blooming shrub providing plenty for pollinators and birds.  It requires some maintenance during the growing season in the form of regular pruning, but is otherwise an easy-peasy plant to grow, with rewards aplenty.

Spring:

 

Summer:

Fall:

 

Winter:

In mild winters, the foliage remains. In colder winters, more of that foliage will disappear.

Texas Native Plant Week–Rock Rose, Pavonia lasiopetala

In keeping with my native plants manifesto which you can read about here, I’m celebrating Texas Native Plant Week by profiling some of the native plants in my own gardens.  The information reflects what I’ve learned from the transformation of my traditional maintenance-heavy “yard” to a no-lawn, water-wise garden, featuring beautiful Texas native plants– which were the drivers and are the stars of that metamorphosis.

I grow lots of Rock RosePavonia lasiopetala, in my gardens.

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I say “grow”–Rock Rose grows itself and mostly, I let it.20120609_1.newThis small “evergreen” perennial  blooms late spring, throughout summer, and into fall and is a Texas tough plant.  Rock Rose flourishes in a variety of light situations, from shade, to dappled shade,

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to full sun, though it blossoms more in full sun.

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The pretty-in-pink flowers open early in the mornings and close for business by 3 or 4pm during the heat of summer.  The closing of those blooms is the plant’s response to heat and is a natural conservation measure.

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As cooler autumn months arrive, the blossoms will stay open until sundown.

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Rock Rose will seed out–really seed out, so if you don’t like that, it may not be the plant for you. I simply yank up the seedlings I don’t want and give them away, compost them, or transplant them.

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Rock Rose is one of those plants that I pop in difficult situations where I’m having problems figuring out what would work; it’s a staple plant in my gardens–good in so many situations.

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Rock Rose flowers on new wood, so after bloom cycles (which start in May) you can “deadhead” or prune the stems (6-8 inches) and the plant will flush out with new growth to start the next bloom cycle.  If you object to pruning, you can let Rock Rose continue to grow and it will bloom, but slightly less because it’s placing its energy toward seed production.  If left unpruned, the branches arch over, heavy with seeds and blooms.  Rock Rose is evergreen, though not a lush evergreen–green leaves remain on the shrub during winter; the plant is more woody than green.

When I prune my Rock Rose plants, I tidy and shape them a bit,

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…but Rock Rose is loveliest in its casual form, meaning that this is a perennial you don’t want to shape too much–let Rock Rose, be Rock Rose.

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Rock Rose attracts bees, butterflies, and hummingbirds but isn’t a specific host plant to any particular critter.  It is moderately deer resistant and very drought resistant. Native to Central to South Texas,  I wouldn’t guarantee winter hardiness in the northern parts of Texas. It probably acts as an annual.

Don’t worry if it croaks during the winter though, I’m sure it will seed out.

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Bloom Day, October 2014

Summer has been reluctant to release its toasty grip on us in Texas, but the cool of autumn has mostly arrived. We’ve enjoyed a couple of refreshing cold fronts, dropping our temperatures into the ’50’s, with highs in the 70’s and ’80’s. The lingering warmth of September and early October didn’t damper blooms in my gardens, though. Joining Carol at May Dreams Gardens, I’m celebrating blooming stuff on this 15th of October.

There is no shortage of blooming native Texas plants in my gardens. Let’s take a tour, shall we?

Barbados Cherry, Malpighia glabra, has blossomed its dainty, pink clusters for a month or so now.

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Soon, cherry red fruits will replace blooms, feeding a whole different crop of critters. Barbados Cherry is lovely in tandem with Turk’s CapMalvaviscus arboreus.

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A cultivar of the native red Turk’s Cap, the Pam’s Pink Turk’s CapMalvaviscus ‘Pam Puryear’, blooms as heartily as the red,

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…but with softer pink swirls perched atop the long branches.   In my gardens, the Pam’s Pink is planted with FrostweedVerbesina virginica,

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….and it’s a successful pairing.   Frostweed is an excellent wildlife plant.   Attracting butterflies, like this migrating Monarch,

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…and bees,

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…and this guy, a Tachinid fly,

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…who you can see again on Wildlife Wednesday, a fun little wildlife gardening meme I host.  The next Wildlife Wednesday is November 5th.  Frostweed a stalwart native perennial; it’s drought hardy and works well in either shade or sun.

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The GoldeneyeViguiera dentata, is photogenic in the fall garden.

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Another perennial which attracts its share of pollinators,

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…these pretty yellow flowers evoke glorious autumn sunshine.

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They work and play well with other natives in my gardens,

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…like the Rock RosePavonia lasiopetala and Barbados Cherry. And who doesn’t love the tried and true combination of yellow and blue?

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This Goldeneye’s companion is the non-native Blue Anise Sage, Salvia guaranitica.  

The roses in my gardens are awake again after the heat of summer. I grow only water–wise antique or cultivar roses in my gardens.  If a rose can’t shrug off the heat and dry of the Texas summer, it’s out!  The Martha Gonzales Rose is one such beast.

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Named after a Navasota, Texas gardener, Martha Gonzales,

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…this rose is beautiful, fragrant, and tough. Martha grows in USDA zones 7a to 10b so it it’s appropriate in a wide range of situations.  If you only grow one rose, make it the Martha!

The Belinda’s Dream Rose, which is appropriate for USDA zones 5a to 10b,

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is the quintessential elegant pink rose. Fragrant and downright luscious, Belinda isn’t quite as hardy as the Martha, but still performs well for me.  Belinda gets a little peeky in summer, but picks up again with rain and softer temperatures.  Caldwell Pink Rose,

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looks dainty, but it’s no wilting beauty.  This poor thing, I’ve moved it four times–I think I’ve finally found its forever home.

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A migrating Monarch finds this Old Gay Hill Rose delightful,

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…and so do I.  Similar to the Martha Gonzales, the shrub is larger and the petals slightly (but only slightly) more pink than the Martha’s fire engine red petals.

I’m not a grow-only-native purest and host a number of non-native perennials in my gardens, like these Four O’Clocks, Mirabilis jalapa.  Considered a staple of the Southern garden, these are new to my gardens and were gifted to me by a gardening friend, TexasDeb at austin agrodolce.

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These lovely trumpets open late in the day, bloom all night, and close in the morning. Four O’clocks are fragrant and are such lovelies–I’m tickled to make room for them in my gardens.

Jewels of OparTalinum paniculatum, are another new-to-my-gardens perennial from TexasDeb.  Jewels are also an old-fashioned flower of the Southern garden.

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I love the teesny flowers, the “jewels” seeds, and chartreuse foliage. Both Four O’Clocks and Jewels of Opar are potentially invasive, so I’ll keep them in check–ripping out uninvited extras who crash my garden party!

It’s now that my Coral Vine, Antigonon leptopus, shines,

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…or is that a sparkle?  Whatever it is, the bees love this bloomer.

After each rain, the Almond Verbena, Aloysia virgata, flowers and its fragrance graces my garden.  Shown here in partnership with Turk’s Cap blooms, the Almond Verbena is favored by honeybees.

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My Almond Verbena is the anchor plant in a group of native shrubs and perennials.

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It fits quite well, I think.

Quoting another garden blogging buddy, Debra of Under the Pecan Trees,  we enjoy a “second spring” in Texas–a  lush blooming autumn gift, after the heat, when all, including gardeners, perk up anew.

What’s blooming in your gardens this October Bloom Day?  Check out May Dreams Gardens for blooms from everywhere.