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07 September 2014

Are You My Mum?

Autumn is coming, whether (or should that be 'weather'?) we're ready or not! A heat wave last week sent fall annuals into overdrive so mums are fully blown, but the mild summer also means summer annuals and perennials are still growing strong. Ack!

Still, one must prepare for the inevitable so I did what any sensible gardener would do: I paid a visit to Longwood Gardens PG Class of 2015's greenhouse.

Second year students in the PG program enjoy an educational trip abroad focused on horticulture and public gardens, and are responsible for raising half the funds for the trip. Part of their fund raising effort includes growing and selling plants at three major sales during the year. 

This week is their Fall plant sale but I was allowed to pre-shop (one of the perks of being an alumna!). Guess what I'll be doing at work this week?


Thanks to Nick and Lincoln, PG Class of '15, for helping me load the truck!

28 July 2014

Thence I Went...Under Ground

On her 1697 tour of northern England Celia Fiennes visited landmarks rightly considered to be (and cannily marketed as) "great wonders". One such were the underground caverns called Poole's Hole, now known as  Poole's Cavern. It was a tourist attraction as early as 1622 and widely written about over the next few centuries (but I noticed Celia's account is scandalously omitted from the website's Literary Heritage page - for shame!).

No wonder that I thought of her when I visited the Luray Caverns, 'a subterranean world of wonder' right here in northern Virginia.

Limestone and mineral rock formations in Luray Caverns

Celia described her visit to Poole and the sights within the cavern:

"Just at the Entrance you must Creep, but presently you stand upright, its Roofe being very Lofty all arched in the Rocks and sound with a great Ecchoe. The Rocks are Continually dropping water all about, you pass over Loose stones and Craggy Rocks. The dripping of the water wears impression on the Stones that forms them into Severall Shapes"

The Luray Caverns were discovered in 1878 but are estimated to be 5 million years older than Celia's caves at Poole. Thanks to a good bit of engineering over the last century modern visitors don't have to 'Creep', you descend into the caverns via a sturdy staircase with signs urging, "Please Use the Hand Rails!" and penetrate into the depths along a bricked path lit with electric lights. I kept wondering what it was like for Celia, having to crawl into the cave (so unladylike, and in a fitted bodice and stays - so uncomfortable!) with no illumination on the path but the light of some candles in a lantern carried by a guide.

Pillars reaching more than 20 feet high
Like Poole's Hole, the cave rooms and some of the formations at Luray have names - all exceedingly fitting: Saracens Tent, Giant's Hall, Dream Lake, Pluto's Ghost, and Titania's Veil. There's even one monolithic formation affectionately called The Shaggy Dog. It's only 7 million years old; a mere blip in the grand scheme of geological formation.

The Shaggy Dog, largest formation in the caverns at approximately 7 million years in the making. At over 40 feet in height, standing before it makes you feel very small, in more ways than one.
Celia's friend and contemporary Daniel Defoe published his three volume A Tour Thro' The Whole Island of Great Britain, Divided into Circuits or Journies between 1724 and 1727. I often wonder if his travels weren't inspired by Celia's tales of her own. I enjoy comparing the two accounts, especially their descriptions of how the caves must have been formed, which I share here with you along with my own:

Celia Fiennes, 1697: "but the difficulty appears as to this hole how so large a Cavity should be Left, as in some places the Roofe is as lofty as you can see and all stone; now how it should be fixt so as not to tumble in by the weight of the Earth or stone on the top: as to the waters dropping it is but what is Customary among rocks and stones, there are many springs which run in the veines of the Earth and allwayes are running in such subteraneus vaults in the Earth, which gather together and runns in a little Channell in the bottom of this Cave"

Daniel Defoe, c. 1724: "It is a great cave, or natural vault, ancient doubtless as the mountain itself, and occasioned by the fortuitous position of the rocks at the creation of all things, or perhaps at the great absorption or influx of the surface into the abyss at the great rupture of the earth's crust or shell."

Deb Wiles, 2014: "Water plus Time equals THAT!? Woooooooaaaaaahhhhhhhhh!!!!!! "

Yeah, whoever finds my travel diary 300 years from now might be a wee bit disappointed.


I do have two advantages over Ms. Fiennes and Mr. Defoe, though. Namely 300 years of scientific advancement in geology and a little tool called Google. Like those at Poole, Luray's caverns are "solution caves", meaning a solution of calcium carbonate donates some of its carbon dioxide, allowing a precipitate of lime to form. The limestone which is formed by this precipitate grows at the supersonic rate of approximately one inch every 120 years. Highly acidic water once filled the chambers and ate away the softer material. As the natural water table declined, the chambers drained leaving the eroded forms behind, which are still growing. There are still springs in the caves and a constant drip in places due to surface water percolating down into the caverns. Our guide called these drips "cavern kisses" and claimed each 'kiss' brought 100 years of good luck. I should be set for the next four centuries. I suspect if the dripping at Poole's Hole had such a catchy nick name Celia would have mentioned it but all she says is:

"The dripping of the water wears impression on ye Stones that forms them into Severall Shapes, there is one Looks Like a Lyon wth a Crown on his head, ye water trickling on it weares it into so many shapes; another place Lookes just Like ye shape of a Large organ wth ye severall Keys and pipes one above another as you see in a great Cathedrall;"

I wonder if Leland W. Sprinkle had read Celia's diary when he set about creating the Great Stalacpipe Organ at Luray? It's the largest musical instrument in the world, and took three years to build starting in 1956. Sprinkle reputedly got the idea when touring the caves with his son, who hit his head on a stalactite producing a musical tone. He painstakingly located and shaved thirty-seven naturally formed stalactites to get the right notes, connecting each one to a solenoid and small rubber mallet controlled by a traditional organ console. The caves cover 64 acres and while the selected stalactites are spread around only 3.5 acres within the caves, the sound can be heard anywhere in those 64 acres. It really is an amazing feat of science and musical engineering, and I found myself wishing again for that TARDIS so I could see the look on Celia's face when she heard this:

video


There is also an underground lake called the Dream Lake. Fed by a spring, the lake is only 20 inches deep but very wide. The water is crystal clear and the still surface creates a perfect mirror reflecting the ceiling above so that it looks as if stalagmites are growing up beneath the water from the lake bed. The photos don't do it justice, and a collective awestruck "Ahhhhh!" came from everyone in the tour group.


Mirrored reflection of the ceiling in the still crystal water of Dream Lake
Different minerals lend their colors to the rocks as well, from brown to red to alabaster white.

The range of colors and intricate layers in this formation can be clearly seen thanks to the lighting

 
 
The formations that really awed me were the curtains, or veils. Their delicate waves look like they were carved by a master sculptor (well, I guess one could argue they were) yet each fold took millions of years to form. Mind. Blown.

Part of Saracens Tent, one of the most well formed draperies in the world.

 

And while Celia noted the formation at Poole that looked like 'a salted flitch of Bacon', Luray's got the fried eggs to go with it:


I still intend to visit Poole's Cavern to see what Celia saw, and I have to admit I'll be a bit disappointed if I don't have to crawl through the entrance as she did, but I love the fact that these wonders exist all over the world and that some can be so similar. Take away the modern amenities and I bet my visit to Luray Caverns wasn't really all that different from Celia's to Poole's Hole. She was a bit of a rebel, though, and broke off pieces of rock as souvenirs. This practice is Frowned Upon and visitors are admonished not to touch the rocks at Luray so I had to content myself with a free piece of Unakite from the museum which my entry ticket entitled me to.

Fitz enjoyed the American version of traveling under ground

Luray Caverns are located in Luray, VA in the Shenandoah Valley. For visiting information go to their website. Guided tours last about an hour. Tip of the day: if you go on a weekend, plan to go early and beat the crowds!

17 July 2014

A Gardener's Garden

Every gardener has a favorite garden. Or two, or twelve. And every gardener I've ever met knows a garden - a gardener's garden - that inspires them, that speaks to their soul, and leaves them with a renewed passion for their profession every time they visit. Whether it's the design, the designer, the plants, the architecture, the artistry, the history, or all the above, there is something about it that resonates. This is mine:

The Gardener’s Garden: Great Dixter on Nowness.com

15 July 2014

What's That Plant?

I simultaneously love and hate when someone asks me the name of a plant that I don't know. I love it because it means as soon as the conversation ends I'll be able to dash to my library to look it up and will learn something new. I hate it because I'm a professional horticulturist with extensive training and education and we're supposed to know these things, right?

Then I remember the story about Christopher Lloyd, one of the - if not The - greatest plantsmen of the 20th century. If he was visiting a garden and encountered a plant that was unfamiliar to him, he'd nudge it with his toe and nonchalantly ask his host, "What are they calling this these days", a cheeky reference to the fact that taxonomists are constantly changing plant names and a brilliant way to mask his extraordinarily rare ignorance. Unfortunately that trick doesn't work when you're the one being asked and you don't know the answer.



So there I was at work - in a garden that's still new to me and that I'm still getting to know - when a guest asked me, "What's that plant?" and pointed to a variegated ground cover with seed heads that clearly mark it a member of the Umbelliferae, which the taxonomists have changed to Apiaceae (see, Mr. Lloyd was really onto something). This puts it in the same family as carrots and Queen Anne's Lace but I recognized it as neither of those. Whatever it was, it was happily colonizing a small space under an apple tree and doing a splendid job of crowding out the Sarcococca*.

After this cursory and incomplete identification, the guest went to her lunch and I went about the rest of my day, temporarily forgetting about the Mystery Plant. Until five o'clock this morning, when I reluctantly awoke from a very pleasant dream with "variegated umbellifer" in my mind and couldn't get it out (we plant geeks obviously have very strange cognitive functions).

You'll be happy to know, then, that the plant in question is a variegated form of Aegopodium podagraria, commonly called Gout Weed** and it's Number 1 on Canada's 10 Most Unwanted List. Introduced to America from Europe and Russian Asia, it was known in those parts as a medicinal and pot (culinary) herb back in the Middle Ages where it was used to treat gout. The 16th century herbalist John Gerard described the thuggish habit I observed thusly:

'Herbe Gerard groweth of itself in gardens without setting or sowing and is so fruitful in its increase that when it hath once taken roote, it will hardly be gotten out againe, spoiling and getting every yeare more ground, to the annoying of better herbe.'

I didn't ask the Sarcococca if it was annoyed, but it sure looks it.



Its botanical name is derived from the Greek words “agios” meaning goat and “podion” which means little foot, combined to "Little Goat Foot" because the shape of the leaf is thought to resemble the shape of a goat’s foot.



Another of its names, Bishop's Weed,*** comes from it's being commonly found near monastic ruins. Monks grew and traded medicinal plants, they being practically the only persons who could travel extensively in the Middle Ages without much fear of being set upon by highwaymen. Saint Gerard lent his name to the plant, as well, being the lucky saint invoked to cure the gout. The roots and leaves have diuretic properties and were boiled or crushed then applied as a poultice, or eaten in a bitter spring salad. It's also thought to be helpful in alleviating symptoms of rheumatism, kidney, bladder, and intestinal disorders, and hemorrhoids (not sure how they discovered that one).

All in all a very useful addition to the early physic garden and the variegation makes this variety a very decorative plant, but it's ruffian personality dictates a ruthless hand in controlling its spread both in the garden and in the wild. It spreads by underground rhizomes and by seed, so cutting off the flower stalks immediately after blooming and pulling it out roots and all are the best control methods. The variegated leaves do make a nice ground cover in an area of dappled shade so long as it's kept in bounds.

Now armed with this bit of information, I'll be ready the next time someone asks me what it is. I might even give it a nudge with my toe and say, "This one? Well, in the Middle Ages it was known by a whole list of names but these days they call it something completely different..."



*Sarcococca hookeriana: also called Sweet Box, makes a nice groundcover. Leaves are deep glossy green in shade with clusters of fragrant white flowers in late winter and early spring.

**Other names include: Ground Ash, Ashweed, Pot Ash, White Ash, Ground Elder, Dog Elder, Dwarf Elder, Garden Plague, Farmer’s Plague, Snow-on-the-Mountain,  Jack Jumpabout, Jump About, Goat’s Foot, Bull Wort, Bishop Wort, Bishop Weed, Herb William and Herb Gerard (whew!)

***Not to be confused with another member of the Apiaceae also called Bishop's Weed for similar reasons, Ammi majus, seen here used to great effect in the garden at Great Dixter.

(greatdixter.co.uk)


13 July 2014

A Review of Queen Elizabeth Olympic Park

I was extraordinarily fortunate to be doing my MA in London during the year which saw the Queen's Diamond Jubilee and the XXX Olympiad. What a year!

In the autumn of 2011 a landscape architect who worked on the design of the Olympic Park gave a presentation to our class; a design teaser of what was then being built. While I was writing my dissertation my tutor, Tom Turner, very generously gave me a ticket to the park so I was able to see it in all its Olympic glory (I can also boast that I ate at the World's Largest McDonald's). In this video Tom and fellow University of Greenwich professor Robert Holden, Landscape Architects both, discuss the post-Olympic landscape of the Queen Elizabeth Olympic Park. I would love to see it again, in light of this review.