Down on the farm...the Loma Vista Farm....
When the Loma Vista Farm--part of the Vallejo City Unified School District--recently hosted its annual Spring Festival, scores of folks came to see the animals, buy a plant or two, and participate in the many activities.
But if you looked closely, you could see that the farm, located at 150 Rainier,Vallejo, is also a pollinator habitat and home to many insects.
Lady beetles, aka lady bugs, munched on aphids in the garden (the garden feeds Vallejo school children as well). Those pesky spotted cucumber beetles also showed up. We spotted a beneficial insect (lady beetle) and a pest (spotted cucumber beetle) sharing a leaf.
A Western tiger swallowtail fluttered down to the aptly named butterfly bush for a sip of nectar. The caterpillar of an anise swallowtail dined on the leaves of its host plant, anise, also called fennel. (It smells like licorice to us!)
All the while, a colony of yellow-faced bumble bees, Bombus vosnesenskii, went about their bees-ness, entering and exiting a hole in the ground in a pattern that would alarm human air controllers. They zigged, zagged and then bumbled through with huge pollen loads, sometimes nearly colliding.
The Loma Vista Farm is also the habitat of "Farm Keeper" Rita LeRoy, who has worked for the Vallejo school district for 25 years. She teaches students about nature and nutrition through hands-on farm lessons involving cooking, gardening, insect appreciation, and animal care. She is an avid entomological enthusiast, an insect photographer, and a member of the Pollinator Posse.
Founded in 1974, the Loma Vista Farm is described on its website as a 5-acre outdoor classroom that provides hands-on educational activities involving plants and animals for children of all ages and abilities. "We seek to increase students' knowledge of nature and nutrition while enhancing academic learning, ecoliteracy, and psychosocial development."
The farm offers field trips, after-school opportunities through 4-H, community service and volunteer opportunities, garden-based workshops for adults, and job training for college students, developmentally disabled young adults, and disadvantaged youth.
It's open to the public Monday through Friday from 9 a.m. to 2:30 p.m. during the school year.
It's open to insects year around!
How many times have you heard that?
Often it is not the beneficial lady beetle--commonly referred to as a ladybug--but that dratted pest, the spotted cucumber beetle.
In a case last week, it was the dratted spotted cucumber beetle, or more specifically, the western spotted cucumber beetle, Diabrotica undecimpunctata undecimpunctata, being "diabotical" on an Iceland poppy.
Lady beetles, the good guys and girls, can be many other colors besides red with black spots. They can also be with or without spots or stripes. They're the blue ribbon winners when it comes to devouring aphids and other soft-bodied insects.
The spotted cucumber beetle, however, is a pest of many of our agricultural crops, including the cucurbits family, Cucurbitaceae, which includes cucumbers, squash and zucchini. You'll also find these little diabolical munchkins just about everywhere.
"Western striped cucumber beetle larvae feed exclusively on cucurbit roots, whereas western spotted cucumber beetle larvae feed on a wide variety of plants including grasses, corn, legumes, and cucurbits," according to an entry in the UC Statewide Integrated Pest Management (UC IPM) Program's Pest Management Guidelines.
So, the next time you're slicing a melon, remember what UC IPM says: "Cucumber beetles are serious pests of smooth-skinned cucurbits, especially melon varieties such as honeydew, crenshaw, and casaba. While the adults prefer tender, succulent portions of plants, including the flowers and leaves, which they may destroy with their feeding, it is the damage to the surface of the melon that reduces marketable yield. When temperatures are high, adults especially feed on the undersides of young melons, scarring them. After the skin hardens, melons are much less subject to attack. Scarring in the crown of the plant is also typical of adult damage. Feeding on stems of young plants, followed by sustained winds, may result in severe stand reductions making replanting necessary. In some situations, larvae may cause serious injury by feeding on roots, and young plants can be killed. Cucumber beetles also spread squash mosaic virus."
A cute little ladybug? No.
Pretty? Well, it is quite photogenic.
Perhaps it was searching for a thistle.
The Mylitta Crescent butterfly (Physiodes mylitta) did not find the thistle—at least in our bee garden.
What it did find were the leaves of a tower of jewels (Echium wildpretii) where it sunned itself before fluttering off to parts unknown.
This butterfly breeds on thistles, says noted butterfly expert Art Shapiro, professor of evolution and ecology at the University of California, Davis. He monitors the populations of Central California butterflies on his website.
"With the naturalization of weedy European species of Cirsium, Carduus and Silybum, it (the Mylitta Crescent) is now found in all kinds of disturbed (including urban) habitats," he says on this website.
Perhaps the next time we see the invasive bull thistle, Cirsium vulgare, growing in a field or alongside a road, it will be occupied by not only a spotted cucumber beetle (a pest) but a Mylitta Crescent.
Some folks mistake the spotted cucumber beetle for a ladybug or lady beetle.
However, unlike the beneficial ladybug, which devours aphids and other soft-bodied insects, the spotted cucumber beetle is a major agricultural pest. The adults, yellowish-green with black spots, feed on the leaves of cucumbers, melons, cotton, beans and ornamentals and can spread viruses. The larvae stunt the roots of corn and other plants.
Its name is a mouthful: Diabrotica undecimpunctata (which has probably appeared on national spelling bees). True to its name, Diabrotica can be rather diabolical in your vegetable garden or flower bed.
Insect photographers often like to focus on its color and character.
But look closely and you'll also see its path of destruction.
If you like community gardens, then you'll want to visit the Avant Garden at the corner of First and D streets in Benicia.
The Benicia Community Garden (BCG) signed a lease agreement in the fall of 2010 with Estey Real Estate to establish a downtown community garden. The land is for sale, but until it's sold, it's a community garden.
The mission of Benicia Community Gardens? "To encourage and enable local citizens to establish and care for gardens throughout the city that provide ongoing sources of healthful food, fellowship, beauty and discovery."
According to their website, the Avante garden is called that because "it represents an experiment not only to provide wider opportunity for more people to observe and practice organic urban farming, but also, because BCG will be making private, undeveloped property in the heart of our historic commercial district productively used for growing food."
Residents lease individual plots and grow such foods as tomatoes, peppers, kale and cabbage. Ornamental flowers line the fence. Signs warn guests not to reap the benefits of what other have sown.
We stopped by there last Sunday afternoon and were amazed that despite the colder weather settling in, insects abound. We saw such pollinators as honey bees, a yellow-faced bumble bee, a hover fly, a carpenter bee and a green metallic sweat bee, as well as a pest, the spotted cucumber beetle. Assorted cabbage white butterfles, also pests, fluttered around the cucurbits.
What a treasure! A good place to spend part of a Sunday.