Insect Profile: Apion (Rhopalapion) longirostre, Hollyhock weevil


Apion (Rhopalapion) longirostre, Hollyhock weevil, on, of all things, my hollyhocks in the sunny border at Garden #4 in Flatbush. The upper photo shows a single male, I believe, on a leaf. The lower photo shows a pair in their typical posture, ie: mating. The female has her (even longer) snout buried in the flower bud.
Photos taken: June 4, 2006

The taxonomy of Apion (Rhopalapion) longirostre, common name Hollyhock weevil or (sometimes) Black vine weevil, is confusing. I’ve seen it listed as being in the Family Brentidae, the straight snout weevils, the Apionidae or Apioninae, and the Curculionidae. Whatever! They are in the order Coleoptera, the beetles.

The genus Apion seem to generally have long snouts. Their antenna are jointed and located halfway along the snout. A. longirostre is distinguished from other Apion species by its orange legs.

Their native range of A. longirostre is in Eurasia, originally limited to southern and southeastern Europe and Asia Minor. It has since spread much further afield there. It was first detected in North America in Georgia in 1914. Within fifty years it had spread across the continent.


They deposit their eggs in the ovaries of unopened hollyhock buds. The eggs hatch and the larvae develop within the ovary, eating the seeds. Within the still unopened bud, they pupate and emerge as fully-formed adults, chewing a hole from the inside out. Adults can winter over in the soil. They may also spread via hollyhock seeds.

This is my first encounter with this creature. I didn’t notice them during the first year in this garden, though they were probably already present. The adults are easily spooked. They move constantly. When I approached them with my macro lens, they would hide deep in the buds and under leaves. The photos above were the only two good ones – ie: in focus on the weevils, not the plant – I got out of the series. Oh, and did I mention they mate constantly?

From what I can find out, they seem to be host-specific: they don’t affect any other plants. Many, if not all Apion seem to be host-specific. A. fuscirostre, the Scotch broom seed weevil has even been intentionally introduced as a biological control for Spartium scoparium, Scotch broom. (Other weevil species are serious problems). There also doesn’t seem to be any biological controls for them, whether insect, fungus or what have you. It’s possible that some generalizing insect predator might be effective. All the literature suggests various insecticides, which I refuse to use. I’d rather just not be able to grow hollyhocks, if it comes to that.

Mechanical controls would seem to be the only option. They also tend to drop to the ground when disturbed, so that could be used against them by shaking them out onto some paper or other collector placed under the plant. I had been wondering why some of the hollyhock buds turned brown and papery before they bloomed. Weevils may be why. If so, then removing and destroying the unopened buds may also help control their population. I’ve also seen suggestions to either freeze the seedpods to kill the larvae (which would not affect overwintering adults), or open the seedpods and place them in the sun to drive out the weevils (my weevils were in full sun, so I don’t think that would bother them enough to make a difference).

Note that there is another weevil, Otiorhynchus sulcatus, which also goes by the common name of Black vine weevil. It looks completely different. In particular, it does not have the long snout with antenna; it looks more like a regular beetle. It’s behavior is also different. It does not lay eggs in flower buds; instead, they drop to the ground. Also, it feeds on multiple host plants. It’s much more of a problem than Apion.

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Garden Notes: Garden Furniture

Yesterday, I took my laptop out to the backyard for the first time. The wireless reception was excellent. It was a little awkward, but workable, sitting in an Adirondack chair with a laptop. Although the trees provide filtered shade, I still had to brighten the screen to its highest setting, reducing battery life. So I want a table where I can put the laptop, and a regular height chair to sit at and type or write, and an umbrella to provide more complete shade.

I’m researching a dining table, seating for at least four, and an 8′ or 9′ umbrella. I have a 7′ umbrella which is on its last legs: the bottom part of the part has rotted off, and one of the spurs has broken. A 7′ umbrella is just not large enough to provide enough shade for four people sitting around a table. I want wood, rather than metal, for its comfort, warmth, beauty, and the natural element it adds to the garden. The table must have an umbrella hole. Ideally, the table will be foldable, and the chairs foldable or stackable, for storage.

Over the years, I’ve used wooden planters and garden furniture made from cedar, teak, and “tropical hardwood.” In my experience, teak really does last several times longer in the garden than any other wood. For example, I can squeeze about five years out of a cedar planter by first treating the wood and reinforcing it with galvanized brackets; the bottom will rot out before the brackets give way. On the other hand, I have a teak planter nearly ten years old which is nearly new. My cedar furniture gets weathered, pitted, loose and weak after just a few years. My teak furniture turns grey the first winter and then nothing else happens to it. No wood is as resistant to rot, insects, and diseases as teak.

The qualms I have about teak are about whether or not, by specifying and purchasing teak as my wood of choice, I’m contributing to deforestation, habitat destruction, and so on. It’s my intent to minimize the impacts of my gardening activities, and to garden sustainably however I can. Is my teak table the equivalent of a tiger-skin rug, or an elephant foot umbrella stand? Nearly every company will claim that their teak is “ecologically harvested” or some such, whatever that means. Third-party certifications, such as those from the Forest Stewardship Council and the Rainforest Alliance, hold promise for identifying sustainable sources and holding suppliers accountable.

All I can conclude is: I can’t know for sure. The same problems arise when purchasing any wood product: a cedar bench could come from a clearcut forest in northwest North America, for all I know. In the absence of other information, my strategy is to select the highest quality and longest-lasting products I can, and to deal with reputable companies. I hope I can reduce my gardening “footprint” by using products which will last me twenty years or more, not something I will need to replace in five years.

The following suppliers are all companies I’ve dealt with over the years. In alphabetical order:

  • Crate and Barrel. I like the design of their teak Trovata Round Folding Table. However, the hardware is galvanized steel, which will eventually rust and stain the wood. Any metal used outdoors other than brass must be sealed, galvanized, or allowed to oxidize or rust. For outdoor folding furniture, the best hardware is brass.
  • Land’s End. They’ve just recently added an “Outdoor Living” category to their catalogs and Web site.
  • Plow & Hearth. They offer furniture made from eucalyptus, cedar, and “yellow balau.” I have no experience with eucalyptus; I expect it’s comparable to cedar. Their Lakeside series is made from eucalyptus in an attractive, Mission style. I’ve never heard of “yellow balau” and assume it’s in the “tropical hardwood” category.
  • Pottery Barn. They’ve recently added outdoor furniture to their offerings. Their Jayden series is teak. They have the least expensive umbrellas.
  • Smith & Hawken. The original popularizer of teak garden furniture and planters. They’ve made an effort to select reputable sources. At full price, among the most expensive. I wait for sales and discounts.
  • Wood Classics. My favorite company for teak furniture. They’re employee-owned and based in upstate New York. What I especially like, is that all their furniture is offered in kit form at deep discounts over the assembled, and even flat pack, pricing. This makes their teak furniture competitive with other suppliers, and gives me the satisfaction of building the furniture myself.

Links

Forest Stewardship Council
Rainforest Alliance

Garden Diary: What’s blooming now

In the backyard and shady path:

  • Astilbe, two unknown varieties: one with dark red flowers, and one with white flowers
  • Dicentra eximia “Aurora”, White bleeding heart
  • Hosta, variety unknown: small, yellow leaves, purple flowers, could be “Gold Drop”? (just starting to bloom)
  • Hydrangea, variety unknown: white, lacecap type flowers
  • Ilex verticillata “Southern Gentleman”, Winterberry, male (in container)
  • Itea “Little Henry”, Sweetspire: white flowers (in container)
  • Kalmia “Peppermint”, Mountain laurel: white flowers with dark red rays (just ending)
  • Lonicera sempervirens, trumpet honeysuckle: dark orange-red flowers (just ending)
  • Tradescantia “Sweet Kate”, Spiderwort: Chartreuse foliage, bright purple flowers

In the sunny border:

  • Alcea, Hollyhocks, unknown strain: tall, pink flowers, white flowers
  • Asclepias tuberosa, Butterfly weed: Bright orange flowers
  • Campanula trachelium “Bernice”, Bellflower: Double purple flowers
  • Coreopsis verticillata “Zagreb”, Tickseed: Orange-yellow flowers
  • Digitalis, Foxglove, unknown variety: White flowers (just ending)
  • Hemerocallis (fulva?), Day lily: Bright orange flowers with brick red interior rays
  • Heuchera, Alumroot, unknown variety: white flowers, silver-variegated burgundy foliage
  • Ilex verticillata, Winterberry, female: White flowers, bright red berries still persisting from last year
  • Monarda didyma “Gardenview Scarlet”, Beebalm, Bergamot: Dark red flowers
  • Tradescantia, spiderwort: dark purple flowers

In the front of the house:

  • Centaurea, Bachelor’s buttons: Cornflower blue flowers
  • Dianthus caryophyllus Super Trouper Dark Violet, Carnation (windowboxes)
  • Heuchera, unknown variety: White flowers, burgundy foliage overlaid with white
  • Penstemon “Husker Red”: White flowers
  • Lavandula, Lavender, unknown variety: dark purple flowers
  • Thymus, Thyme: Pale purple flowers
  • Viola, Pansies: Large chrome yellow flowers with purple marks in the centers

First parrot sighting of the season!

I just heard, and then saw, a pair of the Brooklyn Parrots. This is my first sighting this season. They were flying down the adjacent road, just below rooftop level. I saw them as they passed between our two back neighbors’ houses. They’re easily identified. They are large (about the size of a blue jay), bright green, loud birds. Their flight is also distinctive: straight, strong, and fast.

Myiopsitta monachus, Monk Parakeets, have established numerous colonies in Brooklyn. They are Brooklyn’s most charismatic potentially invasive species. They are also now established in over a dozen other states.

Monk Parakeets are the only parrot species which build their own nests, rather than nest in existing cavities. They create large, communal nests of twigs and other materials. This is one of the characteristics which enables them to adapt to our winters. That, and they like to build their nests around the transformers of power distribution towers.

Links (in alphabetical order by title):

Event: CAMBA’s Annual Shona Sculpture Public Sale Benefit, June 7-11

The Church Avenue Merchants’ Block Association, CAMBA, is holding their annual benefit sale of Shona sculpture – stone sculpture from the Shona artists in the Republic of Zimbabwe – this week.

OPENING NIGHT COCKTAIL RECEPTION
Date: June 7, 2006
Time: 6-9 PM
Place: CAMBA Gallery
Admission: $75

PUBLIC SALE
Dates: Thursday June 8 – Friday June 9, 2006
Time: 1 – 7 PM
Dates: Saturday June 10 – Sunday June 11, 2006
Time: 1 – 6 PM
Place: CAMBA Gallery
Admission: Free

The CAMBA Gallery is located at 19 Winthrop Street, just east of Flatbush Avenue, one block north of Parkside Avenue. The closest subway stop is the Q Train Parkside Avenue station. The phone number is (718) 284-9064.

About CAMBA

CAMBA is a Brooklyn-based non profit organization with programs throughout the diverse neighborhoods of Brooklyn. CAMBA was founded as a merchants association in 1977, but in direct response to the emerging needs of the Brooklyn community, has steadily expanded its services. CAMBA has grown into a full-service, community-based organization providing a continuum of employment, education, health-related, housing, legal, social, business development and youth services to approximately 30,000 individuals each year. …

CAMBA serves persons of low-income; persons moving from welfare to work; persons who are homeless, at risk of homelessness or transitioning out of homelessness; persons living with or at risk of AIDS and HIV; immigrants and refugees; youth; and other groups, working to become self sufficient. Our 28 years of experience in working with Brooklyn’s diverse populations has demonstrated to us that, when provided with services and supports that are meaningful and culturally relevant, our clients can make tremendous contributions toward building their own lives, their families and their communities. The majority of CAMBA’s clients live, work and/or attend school in Brooklyn. CAMBA serves local residents of diverse ethnic backgrounds, including recent immigrants and refugees …

Links:

Invasive Plant Profile: Chelidonium majus, Celandine, Greater Celandine

Revised 2015-02-23: This was one of my earliest blog posts, first published in June 2006. I’ve overhauled it to 1) meet my current technical standards, and 2) improve the content based on the latest available information.



Chelidonium majus, Celandine or Greater Celandine, is a biennial (blooming the second year) herbaceous plant in the Papaveraceae, the Poppy family. It is native to Eurasia. It’s the only species in the genus.

It’s invasive outside its native range, and widespread across eastern North America. It emerges early in the Spring, before our native wildflowers emerge, and grows quickly to about 2 feet. That’s one of the clues to identification. It’s also one of the reasons why it’s so disruptive. The rapid early growth crowds and shades out native Spring ephemerals.

Greater celandine is one of the first weeds I identified when we bought our home in 2005 and I started the current gardens. Here’s my collection of photos from the garden’s second year, in 2006, highlighting the characteristics that help to identify this plant. The photos (click for embiggerization) show:

  1. Full view of plants, showing growth habit, bloom, and ripening seedpods on the same plants. The plants in this picture are about two feet tall. In the middle and lower left of the picture, you can see the leaves of Hemerocallis (Daylilies) just peeking out from under the Chelidonium.
  2. Broken stem with orange sap. You can also see a small flower bud in the leaf axil to the left.
  3. Detail of flower. Notice the 4 petals, clustered stamens, and central pistil with white stigma.
  4. Detail of ripening seedpod. These seedpods are what made me think at first that this plant was in the Brassicaceae (or, if you’re old-school like me, the Cruciferae), the Mustard family. It’s actually in the Papaveraceae (Poppy family).

At the time these pictures were taken in early June, these plants had already been blooming for two months. After I took these pictures, I removed all the plants (and there were many more than are visible in these photos!).

Part of coming to any new garden is learning the weeds. There are always new ones I’ve never encountered before, or that I recognize but am not familiar with. Learning what they are, how invasive or weedy they are, their lifecycle, how they propagate, and so on helps me prioritize their removal and monitor for their return.

For example, Chelidonium is a biennial. So pulling up visible plants before their seeds ripen and disperse kills this year’s generation and the generation two years from now. I might overlook next year’s generation this spring, but I’ll get them next year. The plants are shallowly rooted. By grabbing the plant at the base of the leaves, I can remove the whole thing easily, roots and all.

Chelidonium‘s seeds are dispersed by ants. They’re likely to show up next year close to where they were this year, but not necessarily in the same place. In addition, the soil probably has a reservoir of seeds from the years the garden was neglected. If I disturb the soil, or transplant plants from one part of the yard to another, they could show up in new places. By pulling the plants when they emerge in the spring, and keeping an eye out for their emergence in new places in the garden, I can easily control them. It will take a few years of vigilant weeding to eliminate them completely.

Note that, at a quick glance, this plant can be confused with the native* wildflower Stylophorum diphyllum, celandine-poppy. They’re very similar. Both are in the Papaveraceae, bloom in the spring with four-petaled yellow flowers, have lobed foliage and bright orange/yellow sap, and are about the same height. I find the seedpods the easiest way to distinguish them. The flowers of Stylophorum lack the prominent tall central pistil of Chelidonium, and the stamens form more of a “boss” around the center of the flower, not so obviously grouped in four clusters.

Stylophorum diphyllum, celandine-poppy, blooming and showing the distinctive, more poppy-like, ripening seedpods, in my urban backyard native plant garden, May 2013.

* Stylophorum isn’t native, or present, in New York. But it is native to eastern North America.

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Garden Diary: Mowing the lawn

Today I mowed the lawn.

It’s incredible that I have a lawn to mow. I suppose the novelty will wear off. In the heat of summer, the delight of raking, and walking my push-reel mower back and forth across the width of the house, and gathering up the precious green clippings for the compost … In the heat of summer, all this will be more of a chore, will require me to get up earlier in the morning, before it gets into the 80s, and 90s. But for now, when it’s still possible to catch a cool day without rain, it’s still a pleasure.

And I got to use my new toy: The cordless weed whacker. The grass in the median strip between the sidewalk and the street was heavy and wet from lack of mowing and the rain of the past few days. It’s too choppy and trashy to use the push-reel. The heavy grass drained the battery of the whacker, but I got it done. I just didn’t get to finish edging with it before the juice ran out. Another day for that.

Mowing the lawn puts me out with my neighbors. Across the street, some neighbors were doing the same with their lawn: whack, push, rake. Then I saw them trying to get a plastic bag out of a tree in their front yard. First the rake. Then standing on a plastic deck chair with the rake. Then a step ladder and the rake. Increasingly precarious. When one of them left to find another tool, I stopped my mowing, went to the garage, and got my pole-pruner. As I crossed the street toward them, they practically cheered me on. Standing on the ground, I extended the pole completely, snipped the small branch snagging the bag and brought it, and the bag, down. They told me the bag had been there for over a year! Introductions all around …

Then there was my elderly neighbor down the block who walks the dogs who “don’t like men.” I think they would like me, if we were given the chance. I walked her through the gardens and showed her what was blooming, answering her numerous questions about what things were. I showed her what’s coming up, what weeds there are I need to deal with, what’s going to bloom later in the year. I gave her some Hosta and bachelor’s button from my garden for her to plant in her yard. I’ll give her some Iris when it finishes blooming.

All this from mowing the lawn. And more. On March 28th, during a difficult day, I wrote:

… I sat on the front steps, in the sun, trying to calm myself … As I sat I saw a woman and three children walking up our block. The woman and one child walked on the sidewalk. The other two children alternately walked and ran across the lawns between the houses and the sidewalk. Children running on grass …

I thought that, when they saw me sitting on my front steps, the might move to the sidewalk, and I would invite them to continue running across our lawn as well. I needn’t have bothered. When they got to our yard, they continued across our lawn without visible pause or hesitation. The older barely regarded me. And on to the next lawn.

After they passed, I came to tears.

And so I weed, and mow, and rake, with gratitude.

Event: Brooklyn Week at StoryCorps, June 18-24, 2006

A photo of the StoryCorps booth in the PATH station at the World Trade Center.

The StoryCorps booth in the PATH station at the World Trade Center, taken when my partner and I recorded our remembrance of our friend David Joseph Wilcox on the 10th anniversary of his death from AIDS.
Photo taken: January 22, 2006

The Brooklyn Historical Society and StoryCorps are dedicating the week of Sunday, June 18 through Saturday, June 24 at the StoryCorp’s Lower Manhattan StoryBooth to the stories of those who live and work in Brooklyn. To make a reservation, call StoryCorps at (646) 723-7027, Monday through Friday, 9:30 AM to 5:30 PM. Online reservations will not be accepted for this event.

Additional details are available on their Web sites:

Opening Day, Cortelyou Greenmarket

Some of the apple varieties available from Red Jacket Orchards at the Courtelyou Greenmarket on opening day.
Photo taken: June 3, 2006

Today was the first day of the season for the Courtelyou Greenmarket which serves our neighborhood:

Greenmarket has organized and managed open-air farmers markets in NYC since 1976. By providing regional small family farmers with opportunities to sell their fruits, vegetables and other farm products to New Yorkers, Greenmarket supports farmers and preserves farmland for the future.
Greenmarket Farmers Market

The Courtelyou Greenmarket is located in the schoolyard of P.S. 139 on Argyle Road, just up the block from Courtelyou Road. There were only three vendors there for opening day:

Based on our experience last year, the number of vendors will ramp up through the month of June. There’s about a dozen during the summer, selling all kinds of fresh fruits and vegetables, plus meat, dairy, baked goods and some handcrafts.

Related Posts

Greenmarket

Links

Greenmarket

Web Resource: New York Metropolitan Flora Project (NYMF)

Updated, 2013-08-25: Corrected links.


Brooklyn Botanic Garden‘s New York Metropolitan Flora Project (NYMF) documents the distribution of woody plant species among 25 counties in New York, New Jersey, and Connecticut within a 50-mile radius around New York City. Tools available online include:

While most of the botanical community concentrates on tracking the threats to biodiversity in the tropics, scientists at the Brooklyn Botanic Garden are undertaking the most comprehensive study ever of the plant biodiversity in metropolitan New York. Studying the vegetation changes in highly populated areas is critical to understanding the future of life in our rapidly urbanizing world. …
Understanding the urban landscape is critical in our rapidly urbanizing world. Findings of BBG’s Metropolitan Flora Project serve as vital references for those involved in environmental efforts, from preserving rare plants, to planning parks and greenways, to repairing degraded habitats, to designing home gardens in which native plant communities are preserved or restored.

Links

Brooklyn Botanic Garden: New York Metropolitan Flora Project