Mt. Cuba Center Summer Wildflowers

I was at the Mt. Cuba Center a few weeks ago and was glad to see all the different plants in bloom. Some of these I had never seen flowering before and was quite amazed to realized I'd been walking past shrubs and plants at the Mt. Cuba Center I'd never seen flowering all because I'd never visited on a certain week. 

First though, while around the Round Garden, I paid a visit to the adjacent Trial Garden where they seem to be revisiting Coneflowers. They had already done these a few years back but I think they had different criteria back then. I know in recent trials with Monarda, and Phlox, they mention which ones Hummingbirds, Butterflies, and Bees favor so that would be a nice thing to know when deciding which of the hundreds of different Coneflower varieties they like.

So this is a fairly standard coneflower. I don't know if it's the true species or a cultivar but it's close enough. I recall looking around at all the colorful and wondering why they hadn't included 'Rainbow Marcella' which I bought this past spring.

This is a plant back in my garden and the flower which the squirrels damaged but I was otherwise pleased with them. Now of 6 plants only 4 have flowers but only 1 of them has the cultivar color as advertised. I'd been thinking I was ripped off.

Well then I found it in the Mt. Cuba Center trial garden and realized the orange in the petals quickly fades out of the flowers. Also of all the cultivars in their trial it was among the shortest and I believe 1 of the 5 plants they had was already dead. :(

But once their trial ends, I'll be sure to read over the results carefully and if there's a particular cultivar or true species that does well I'll be sure to add it.

Two natives I've overlooked in my perennial garden are Blanket Flower (seen above) and Stokes' Aster which I wasn't able to photograph well. I installed a perennial garden in the front yard this year, right up against the side walk so people walking by can admire the flowers. If it were just a little bit longer I would fill it in these two plants for sure.

There were lots of different Silpheum species flowering there. Many of which I can't identify off hand, and actually I was surprised to learn there were more than 4.

Mohr's Rosinweed I did recognize though. Silphium mohrii has lighter yellow flowers and the foliage has white hairs too, giving the stem and leaves a pale appearance. This was also the first place I ever encountered the plant. On previous visits with actual classes the gardener, David, had been reluctant to point this very obvious plant out. It's not exactly native to Delaware nor commercially available. It was a gift from someone which they planted and grow in the meadow. Considering the norther most range for the species is a population in Tennessee I imagine they were surprised to discover it's cold hardy. 

Wild Petunia, Ruellia humilis. To be perfectly honest, if this wasn't flowering I'd have never even noticed it. This is one of those native plants that you have to plant ~25 of right next to one another to form any sort of an impact because each individual plant on it's own is kind of pathetic. Sometimes they'll have a cluster of 4 flowers on them but that's about the most they'll ever have at one time. So when grown as if it were a clumping aster the impact is easier to appreciate. This one may have been a seedling that came up on its own.

Meadow Beauty, Rhexia virginica. I wish I could say more about this one because the flower is interesting. It's a pond plant, or maybe riparian plant that has a wonderful pink flower.

Asclepias incarnata. I always love wild strains of Swamp Milkweed. They seem to grow more vigorously and branch out more at the top of the plant than traditional plants sold in stores. Also the flower color is more wild. Some of this one even has pink spots on the flowers while other parts of it are more uniformly patterned.

And of course there were Monarchs swooping about along with Tiger Swallowtails, Red Admirals, and a few other butterflies. I found a Monarch Caterpillar chomping away on a plant of milkweed.

Plum Leaf Rhododendron, R. prunifolium, was a real stand out at the gardens. Partly because of their size and partly because of the display they were putting on. This is a species native to a very narrow strip between Georgia and Alabama and yet they still manage to achieve 10' tall growing in Delaware. (I've purchased two of these via an online dealer to see if they're hardy in zone 7). 

The Mt. Cuba Center has about a dozen shrubs planted around its property and each one was covered in large clusters of orange/salmon-colored flowers. Some hued more red while others were orange but salmon-ish was the norm. 

There wasn't a whole lot of pollinator activity with them but that's generally the case with Rhododendrons. They're ideally pollinated by large swallowtail butterflies who's wings rub against the pollen anthers and then the stigma to ensure pollination. Hummingbirds might also do something similar but I don't think this has been scientifically proven (though it likely happens).

The only bees I saw taking an interest in the flowers were these tiny sweat bees who couldn't help but take advantage of all the pollen being offered.

Another large shrub that was flowering heavily was Summer Sweet, Clethra alnifolia which is seen here on the background with all the white flowers.

Summer Sweet is sometimes called Sweet Pepper Bush because of the seed heads looking like peppercorns waiting to be ground, though you'd never want to do that with Clethra. It's not poisonous but isn't pepper either.

Another name it goes by is Sailor's Delight referring to it's sweet fragrance which is know to travel a great distance in the right conditions. This plant is at home in a damp forest understory or along water ways and like filtered to full sun.

I couldn't tell if this was Bugbane or Doll's Eyes. Both are fairly similar-looking and I think in the same genus, Actaea. Some of these used to be in Cimicifuga but I believe they've been consolidated.

Honeybees work both Clethra and Actaea but I don't think they're very happy about Actaea. Likely something about the irritating smell of Actaea seems to make them angry while working this plant. They are obviously more on edge and seem to fly directly into other bees working the flowers. Things are more calm and easy going around Clethra.

Buttonbush, Cephalanthus occidentalis, was another bustling hub of bees. These photos were actually taken at my house where I grow 3 of these wonderful shrubs. In talking with the gardeners at the Mt. Cuba Center I often ask them why they don't have certain things. And walking the gardens this past weekend I was happy to see they have added this one!

I took pictures of the flowers from the shrubs in my yard in New Jersey though because curiously enough they weren't flowering there in Delaware... So next weekend I'm sure their button bush plants will be blooming.

Although I have to say they weren't planted where I would have planted them. They're at the top of their meadow garden. (top of a hill that is.) Whereas in nature they usually occur growing along the banks of lakes and streams. Where they have them isn't a bad location, just not where they'd be found in the wild. Their meadow garden, I believe because of the slope, allows them to grow things that like water along it. For example they have Joe Pye Weed at the top too as well as by the ponds and it does fine in both locations. 

Along their forest path they had some native Lilies growing. And these are some of the harder ones to grow in my experience. The Mt. Cuba Center makes it look easy as they have several nice big plants, each with lots of blooms to them. In general the plant opens one flower at a time, but because a plant might have 15 flower buds on it, this prolongs the bloom.

Ideally they're pollinated by large swallowtail butterflies and possibly hummingbirds whose' wings and feathers brush up against the pollen anthers and make contact with the stamen. While I didn't witness that I did see loads of little sweat bees stealing the pollen. What were clearly females were becoming covered in pollen and what were likely males kept pouncing upon them to mate.

These actually aren't pollinating the flowers because they're not making any contact with the stamens.

Their meadow garden was growing nicely. This is a combination of Little Blue Stem, Big Blue Stem, Indian Grass, and a few dozen others. This main section is mainly comprised of grasses though. Flowering plants were kept to a minimum on purpose because the late Mrs. Copeland felt there were few things as calming as seeing the wind casting waves across a grassy meadow. And honestly I think she was right.  

Becasue flowering plants are obviously a big part of a meadow they're grown mostly at the top of the hill, out of view from the lower areas. They have a great collection here but early summer isn't the best time to view them. Goldenrods, Liatris, Perennial Sunflowers, Wild Senna, Black-eyed Susans, Joe Pye Weed, Milkweeds and loads of Asters all grow among the grasses. 

Mt. Cuba Center 2017 Wildflower Celebration

I was once again delighted to visit the Mt. Cuba Center for their annual Wildflower Celebration. This is an event I look forward to every year. Their gardens are probably 50 years old and their woodland plant collection is top notch. However I've learned that this doesn't always guarantee for a good show.

Plants are triggered to flower from a lot of different things. Some are slowed down dramatically by the cold or rain, while others don't care at all. Lots of little factors can throw off the blooming of certain species. So this can all vary form year to year.

Often by the time the Mt. Cuba Center has their Wildflower Celebration plants like Hepatica, Twinleaf, Trout Lily (both white and yellow), Snow Trillium, and Trillium pusillum have all finished flowering. This year, though, these were all flowering, but most of the non Trillium ephemerals hadn't opened as much. Often the forest floor to their woodland gardens are covered by a mixture of Virginia Bluebells, Fernleaf Phacelia, and Woodland Poppy, which all spread almost thuggish in the gardens there.   

A few years back all the stars aligned and pretty much every spring ephemeral was in full flower. The Snow Trilliums, Twinleaf, and both Trout Lilies were all bloom in good number along with vast carpets of Phacelia, Bluebells, and Poppies to the point that the forest floor could not be seen. Creeping Phlox, Foam Flower, Bluets, Ragwort, multiple species of Spring Beauty, a variety of trees including Redbud, Witch Hazel, and Dogwoods were all in full bloom as well. And this wasn't just a few patches here and there as it often is; it was everywhere! This was also the year I saw Wild Camassia there, a native bulb no one seems to recall planting and have either died out or been removed from the gardens since. I have an awful picture of them somewhere so I know I'm not crazy but none of the gardeners there seem to recall the species ever having been planted. (It was likely removed because Camassia is more of a midwestern plant).  

This year's display wasn't as grand as that golden year. It's important to remember this isn't a flower show where plants are grown and timed in green houses and planted at the moment of perfection. These are plants left to grow in the ground all year so their flowering is largely effected by the weather. I would never say it was a disappointment to go. There are always tons of wildflowers in bloom just not in abundance throughout the gardens. And as always it's worth going for the Trilliums alone. 

So here are a few highlights that I enjoyed seeing.

Eastern Redbud, Cercis canadensis. Also available in white.

And Red! I've always found it odd how plants with colors in the name often aren't that color. I don't know what cultivar this is but it's certainly a centerpiece. Beside it is a Dogwood, Cornus florida. It's  a good combination but I feel like the red version Cornus rubra, or Native Wisteria Vine (not grown on the tree!) would make for a better pop of color.

Cornus florida have deceptive flowers. All the flowers in this photo actually aren't open yet. Those greed buds in the center here are actually the flower which will have tube-shaped petals. Surrounding them are white colored bracts, which are modified leaves designed to draw attention to the flowers instead of photosynthesize. 

Rhododendron vaseyi. Normally I don't go for Rhododendrons but this one was a cute color. They're very sparse with flowers compared to other species though. Normally I gush over Flame Azalea, Rhododendron calendulaceum, and their bright orange flowers but I don't think any were flowering there yet.

Fernleaf Phacelia, Phacelia bipinnatifida. The Mt. Cuba Center is where I first learned about this plant and I've wanted it ever since. Who knew an aggressive spreading, biannual, that's swarming with pollinators, and turns forest floors into cloudy carpets of purple would be such a tough sell to the nursery industry. No one sells this species except for one awful nursery online that only sells it in bare root form, and the occasional native plant sale. I have to drive all the way to Delaware to a place just down the street from the Mt. Cuba Center to buy this plant and hope and pray that it reseeds itself in my yard. Please someone, just sell the seeds to this plant online.

This was an awful year for Bluets too!

I won't pretend to know anything about growing these or how they manage the moss patch at the Mt. Cuba Center. But in years past the whole moss patch was glowing thick with Houstonia caerulea. This year it was mostly just this one sliver of the patch in flower.

 I've tried to grow these too and they're tough to establish. The roots are extremely tiny and prone to drying out or rotting away or getting eaten. Everyone who sells them gives me conflicting reports. Dry shade, full sun, damp moss but only on a hill with well drained soil? It's confusing.

I'm reasonably sure the Mt. Cuba Center occasionally harvests the plants from the patch to use elsewhere in the garden. I've started seeing them growing in patches along the pond and in other moss rich parts of the garden. 

Yellow Lady Slipper, Cypripedium pubescens. One of our rare native orchids. Well, more uncommon. They tend to only grow where trees have fallen in the woods and certain types of beneficial fungi have taken root first.

Wild Geranium, Geranium maculatum. 

Virginia Bluebells, Mertensia virginica. Both the typical blue form that is so common and a very rare red form. Normally these start to open up red and quickly change to blue when they fully open. The flowers stay that way a few days before falling off. With the red form though the flowers never turn blue.

The Mt. Cuba Center also has a white form which has spread a bit since I first saw it there. The red form is still just that single stalk but the white here were pushing out a dozen or more.

Both fall in comparison to the blue which I've seen dominated the forest floor in years past.

Turkey Corn, Dicentra eximia.

Iris spp.

Trout Lily, Erythronium americanum. While I don't always see this plant blooming at the Mt. Cuba Center every year, when I do see them I normally see it flowering in large patches. This year though this one plant was the only one I noticed... odd. 

Trout Lilies are notorious for not flowering though. They spend too much time spreading by horizontal roots to form new bulbs. Each bulb then works on sending roots deeper in the ground but they only flower after reaching a certain depth, which can take forever. The result is a huge patch of leaves but no flowers every year. I'm told though that planting them in pots or adding stones a few inches under the bulbs will help stress the plant into putting its energy into flowering. I have yet to try this trick out. 

Swamp Pink, Helonias bullata. This is an endangered species I'm happy to see they still have there. On some years they have a dozen or so plants all blooming around the ponds but this year I only noticed this one. 

Some nurseries have found out how to germinate this species in captivity and are making it commercially available. I've tried to grow it in my gardens though but found it too finicky to survive here. I suspect it's not drought tolerant at all and requires constant moisture year round which I wasn't able to give them. 

Trillium grandiflorum.

After flowering for just shy of a week the flowers turn pink and eventually go full magenta before they finish flowering. 

When grown in mass they put on quite a show. All the white flowers look great growing together and then a week later you're treated to all the varying shades pink, red, magenta and so on.

The Mt. Cuba Center has a whole garden featuring hybrids and unusual cultivars. Here is a red form of T. grandiflorum. Instead of opening white they open up red and stay that way the whole time they're flowering.

Same plants but in slightly different light.

Trillium erectum is normally red as seen in the background here. This clump though was mostly a white form of the plant.

Trillium simile has always been a favorite of mine. The dark center sets it apart from the similar looking Trillium flexipies. I've been meaning to commission this flower into a piece of jewelry; a button or pendant perhaps?

Here they are growing in mass. Sadly unlike T. grandiflorum I think the petals just fall off instead of change color. 

Trillium pusillum. Normally this one is finished flowering by the time the Wildflower Celebration is held each year. Even this one is past its prime. They do open white but turn pink before the petals fall off.

Despite having all the fun qualities of T. grandiflorum this plant doesn't create such a sweeping effect. They're much smaller plants and the flowers are no where near as large.

Oddly enough after the petals fall off the three leaves just underneath give the effect that they have green petals.

Twisted Trillium, Trillium stamineum.

This is a fun one that's really easy to identify because the petals twist around.

I've been wanting to grow this in my garden for a number of years but no one seems to sell it online.

The Mt. Cuba Center makes growing this plant look easy because they seem to have a lot of it. Just down the road there's a farm that holds a native plant sale every year and I've seen plants provided by the Mt. Cuba Center sold there before. There was a sign for this species there but sadly they were sold out by the time I noticed it.

Trillium lancifolium. I've seen commercially available before but not often. It gets its name from the petals being so erect up into the air like a series of lances aimed up high.

Trillium oostingii. An odd species I only ever see there.

They had tons more Trilliums and variations there of growing in their gardens but I wasn't able to photograph it all as I've done on years past.