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Perennials For Fall

Tibouchina

Fall is a spendid time in the garden where many varieties display shapes and colors that rival the better-known maple varieties. When planning your garden, think about a number of these plants showing which show blossoms and foliar color from August through November.

The plants in the following table may all be seen at the Frelinghuysen Arboretum.

Table of Fall Perennials

Botanical Name Common Name Bloom Time Color Height
Aconitum x arendsii Monkshood Oct-Nov Purple-blue 6′
Allium senescen Allium Sept Lavender 12″
Allium thunbergii ‘Ozawa’ Flowering Onion Oct-Nov Pink, White 6-12″
Anemone x ‘Bressingham Glow’ Japanese Anemone Sept-Oct Pink 2-4′
Anemone tomentosa ‘Robustissima Japanese Anemone Aug –Sept Pink 2-4′
Aster x frikartii Aster July-Sept Lavender 2-3′
Aster novae-angliae New England Aster Sept-Oct Mixed 3-6′
Aster tartaricus Tartar Aster Oct-Nov Lavender 4-6′
Begonia grandis Hardy Begonia Sept Pink, White 2-3′
Calluna vulgaris Heather Aug-Nov Pink, Red, White 2′
Chelone lyonii Turtlehead Aug-Sept Pink, White 3-4′
Chrysanthemum x morifolium Garden Mum Aug-Nov Various 2-4′
Chrysanthemum articu Artic Daisy Oct White 2-3′
Cimicifuga ramosa ‘Atropurpurea’ Bugban Sept White 5-8′
Echinacea purpurea Purple Cone Flower July-Oct Purple-pink, White 2-3′
Eupatorium coelestinum Hardy Ageratum Sept-Oct Blue 2′
Gentiana asclepiadea Gentian Sept Blue 1-2′
Gentiana septemfida Gentian Sept Blue 1-2′
Kirengeshoma palmate Kirengeshoma Aug-Sept Yellow 2-3′
Physostegia virginiana Obedience Plant Aug-Oct Pink, White 2-3′
Sedum spectabil Stonecrop September Pink 2-3′
Sedum x ‘Autumn Joy’ Stonecrop Aug-Oct Pink to Red 2-3′
Sedum x ‘Ruby Glow’ Stonecrop Aug-Oct Pink to Red 1′
Tricyrtis hirta ‘Alba’ Toad Lily Sept-Oct White, Lavender 2-3′
Vernonia noveboracensis New York Ironweed Sept Purple 5-7′

Scent

by Lesley Parness – lparness@morrisparks.net

This year, fragrance is the Plant Sale’s theme. Likewise, it is the topic of programming for Garden State Gardens (www.gardenstategardens.org) and for a new cell phone tour here at The Frelinghuysen Arboretum. To get you up to speed, follow your nose to these sites.

Start at coty.com to learn about our funder’s history.

From the sublime writings of Diane Ackerman in “A Natural History of the Senses,” at http://www.american-buddha.com/lit.naturalhistsenses.smell.htm to the ridiculous at http://en.wikipedia.org/wiki/Smell-O-Vision.

Understand the role of smell in human evolution at http://www.upi.com/Science_News/2011/05/19/Sense-of-smell-drove-brain-evolution/UPI-44821305848041/.

Enjoy some pleasant narration on the nose at http://www.chemheritage.org/discover/media/distillations/088-sense-of-scent.aspx.

And finally, listen to smell snob Chandler Burr, the New York Time’s first ever fragrance critic, at http://poptech.org/popcasts/chandler_burr__poptech_2008.

Our Pollinating Pals

by Lesley Parness – lparness@morrisparks.net

In reflecting back on this summer in the garden, I can definitely say that something was missing: Bees! What is more pleasant than dozing off on a mid-summer afternoon to the quiet drone of someone else (human or otherwise) working hard to improve your garden? Statistics confirm what our senses already know – pollinator populations are diminishing. Animal and insect pollinators include bees, moths, flies, bats, birds, ants, butterflies, wasps and beetles. It has been estimated that pollinators are needed for the reproduction of 90% of flowering plants and one third of human food crops. Domestic honey bees pollinate approximately $10 billion worth of crops in the U.S. each year. What can we do? Plenty. This summer, we’ll be hosting several programs on pollinators so here’s some homework to get ready:

Begin at www.pollinator.org – a great site for an introduction to the topic. FYI – NJ is an “Eastern Broadleaf Forest Oceanic Province.”

At the Applewood seed company’s website, http://www.applewoodseed.com/ we learn that “Animal and insect pollinators are essential to pollination in over 75% of the world’s flowering plants, which includes roughly 35 percent of the world’s crops.” See their “Pollinator Conservation” section for good plant selections.

At www.xerces.org tackle the heavy science. The Xerces Society is a nonprofit organization that protects wildlife through the conservation of invertebrates and their habitat. For forty years, the Society has been at the forefront of invertebrate protection worldwide, harnessing the knowledge of scientists and the enthusiasm of citizens to implement conservation programs.

Finally, at www.nwf.org you will gain confidence to create a Certified Wildlife Habitat. Whether you have an apartment balcony or a 20-acre farm, you can create a garden that attracts beautiful wildlife and helps restore habitat in commercial and residential areas. Look for a class all about pollinators in our next issue.

Gingerbread Wonderland

Gingerbread2011flyer
Gingerbread Wonderland

Winter dealt many of us a pretty severe blow last weekend. If that made you miss the entry deadline, don’t worry! We have extended the entry deadline until November 21st. Read all about it on our Events page and show your castle, house, winter scene, space launch, family, etc. (to name a few of the past entries). It’s great fun for young and old and will take you mind off the last week’s mess.

ARTboretum – Pumpkin Carving Art

Yesterday, artist Nelson Hancock installed an exhibit of charmingly evil cucurbits (that’s pumpkins of all shapes and sizes) on the slate patio just outside the Haggerty Education Center that is both whimsical and fascinatingly scary. The pumpkins will be on display through Halloween, so try to get over to the Arboretum to see them.

Jennifer Basile was there yesterday and provided several pictures of this fun display — click on the picture at right to see these in our picture gallery.

The Morristown Daily Record was there too and has posted a gallery of the artist at work. Don’t miss out on this fun exhibit.

Fall Afternoon

While walking around the Arboretum this afternoon I saw that Fall has begun painting the trees while asters, sedum and mums show off their colors. I hope you get a chance to enjoy this season soon. In the meantime, click on the picture at the right to go to our picture gallery for lots more.

Don’t forget the Autumn at the ARTboretum event starting tomorrow, Oct. 23rd through Halloween. Lots more photo opportunities!

Virtual Gardener Fall, 2011 Guiseppe Arcimboldo

Virtual Gardener Fall, 2011 Guiseppe Arcimboldo –

This season’s ArTboretum offering is an exhibit of pumpkins carved by artist Nelson Hancock. Nelson found his inspiration in the work of Italian painter, Guiseppe Arcimboldo (1526 – 1593).

Born in Milan, Guiseppe Arcimboldo would rise to the ranks of “Royal Portraitist” in the Court of Emperor Maximillian II. After his death, Arcimboldo’s work was largely forgotten by the art world. It was not until the 1930’s, when the NYC’s Museum of Modern Art mounted an exhibit on Surrealism and Dadaism and included his paintings, that Arcimboldo found his role as mentor of surrealists. How this essentially Mannerist painter came to mentor 20th century surrealists is a fascinating story.

Last year, the Washington’s National Gallery of Art presented “Archimboldo – Nature and Fantasy. Paintings and exhibit text may be viewed at http://www.nga.gov/exhibitions/2010/arcimboldo/arcimboldo_brochure.pdf

Study his painting “Spring”- can you count the more than 80 flowering plants that compose it? “Summer” features a locavore’s delight.

The Virtual Gardener suggests you visit these all of these sites, in order to understand the world in which Arcimboldo created his fanciful, metaphorical, somewhat sarcastic and always and technically brilliant works.

http://www.artcyclopedia.com/artists/arcimboldo_giuseppe.html – to learn about Mannerism and link to art museums across the globe with Arcimboldos in their collections.

http://www.theartwolf.com/arcimboldo_bio.htm – to read Arcimboldo’s inspired poetry.

http://arcimboldo.interfree.it/inglese/index.htm – for a nice chronology of his life and interesting comparisons to Leonardo Da Vinci.

http://www.absoluteastronomy.com/topics/Giuseppe_Arcimboldo – read the section on his “Legend” to see how Arcimboldo’s vision lives on in the 21st century.

Getting Started with Cannas

Canna Yellow King Humbert

Yes, you can – grow Cannas!

Cannas are tuberous plants with colorful tropical looking foliage and brilliant, lily-like flowers. The leaves may be green, yellow, purple or multi-colored with stripes, marginal markings or blotches. The flowers come in colors of white to ivory to shades of yellow, orange, pale to deep pink, apricot, coral, salmon and a variety of reds.

Their common name is Indian-Shot. This refers to the plant’s black, very hard seed, which resembles the shot or pellets in shotgun cartridges. Cannas come from tropical and subtropical areas of the Americas and Asia. They are easy to grow, both in the ground or in containers. They can be grown from seed or by saving the tubers from year to year. The leaves may be used in flower arrangements. The flowers only last a day to two, so, do not make good cut flowers.

There are three main types of cannas: lower growing and dwarf varieties include the French or Crozy cannas which grow 3-4 feet tall, with large flower trusses; the Pfitzer Dwarf cannas from Germany, which grow 2 feet to 3 feet tall; and the Seven Dwarfs series which only reach about 18 inches. The Italian, or orchid-flowered cannas, are tall 4-5 feet, and the flower segments are more open and spreading than the French cannas. The third group includes all the other cannas, most of which are the tall, 5-6 feet, old-fashioned varieties with smaller flowers and large leaves.

Because of their tropical look and lush foliage, cannas look great when planted against a plain background and in groups of a single color. They make striking poolside plantings and look great around or in containers on terraces, patios or decks. They are great mixed with hot colors in a perennial border. They go well with tall grasses. Cannas bloom continuously and look good all summer, even through the dog days of August.

Cannas were used extensively in the Victorian era as they lend themselves well to bedding out schemes and formal gardens. For a taste of this type of planting go to Skylands in Ringwood in August or September and look at their annual garden. It is very Victorian. More recently bedding out schemes had lost favor as had bold colors and tropical foliage. The style of 30 to 10 years ago was cool colors, pastels and perennial borders. The pendulum has swung back the other way now, and bold colors, foliage and the tropical look are back in. These combinations are being used in a more informal manor and usually thickly planted for a lush look.

Although cannas may be grown from seed, usually the seed will be mixed colors and sizes, so what you get may not be what you want. Seeds may be started in early spring. Nick the seeds with a file or knife or soak in warm water overnight to hasten germination. Plants need to receive good light and may be planted outside in late May.

If you buy rootstock, you will be assured of getting what you want both in size and color. Rootstock may be started indoors in early April for a late May planting. Start in flats or pots with bottom heat and keep them warm until they sprout. Afterwards supply them with good light for strong growth. Or plant them outside in the spring. Cannas are hardy to Zone 7, so they can take some cold. Here at the Arboretum, we often plant them outdoors in early May. They usually take a few weeks to really come up but the root system is establishing itself during that time. Plant them 4-6 inches deep, 10-24 inches apart (depending on cultivar).

Cannas love rich lose soil with all the fertilizer you can give them and as much heat and sun as possible. Keep them well watered at all times. Pick off faded flowers to prevent seed production and when the stalk has finished blooming, cut it down completely to the ground.

If you live in Zone 7 (shore) or plant you canna right by the foundation of the house, it will be hardy outdoors. If you have a lot of rootstock available, you might try leaving some in the ground over winter and mulching heavily. Some cultivars are reported to be more hardy than others. Otherwise, you must dig them up in fall, after a frost has hit. Lift them out of the ground with a fork and shake off the soil. Leave them outdoors for a day to two if possible to dry off. Store the rootstock in brown paper bags, open cardboard boxes or burlap in a cool, but not freezing place. An unheated attached garage or cool basement works well. At the Arboretum, we store ours in a cool hoop house still in their containers and watered occasionally. Others are stored out of a pot in a cool cellar. Check the roots occasionally to make sure they are not drying out too much. Spray a little water on them from time to time if needed. The next spring bring out the rootstock, and divide as needed. Leave at least three eyes to a division and more if you like. Container grown ones should only be a small division, especially if you plan to plant something else in the container.

Cannas do well as a single item in a container or may be combined with other tender annuals. Be sure to pick items of approximately the same size as cannas grow quickly and can easily overwhelm other plants in the containers. Perhaps you will choose to use tall, fast growing coleus as a foil in the containers.

Cannas have few pests or disease problems. Occasionally European Corn Borer may attack the stalks in last summer or early spring. The larva is pink, 0.75 to 1 inch long; the egg-laying moth is yellow-brown and nocturnal, thus hard to spot. If you find this borer, kill it, and try to get the larva out of the stalks. But Japanese Beetles will often be attracted to Cannas in July. The adults the congregate on the leaves, mating and feeding. Every evening go outside and had pick them off. Remove badly damaged foliage. Most sprays do not work well on Japanese beetles.

When planting in containers, use Pro-Mix, mixed with compost, Osmocote and one of the water absorbing products on the market. Cannas are very thirsty and quickly dry out. By using this substance, you will be able to water every other day. The Osmocote provides time-released fertilization all season long.

Good luck with your Cannas!