- (Focus Area) Yard & Garden
Fleas can be found on pets year-round, but populations tend to increase dramatically in spring and summer when temperatures are warmer. Larvae develop rapidly in areas where temperatures reach 70° to 90°F. Fleas are a major concern for pet owners as they can give dogs and cats tapeworms, but they can also transmit flea-borne typhus to people and spread plague to wild animals like ground squirrels. These blood-sucking pests can be introduced to backyards from feral cats, squirrels, opossums, and other wildlife.
To learn more about fleas, the diseases they can spread, and their management, check out the recording of UC IPM's Urban & Community IPM Webinar from June 2024 at https://www.youtube.com/watch?v=b-w7J6mkTeM. You'll hear from flea expert Dr. Laura Krueger of the Orange County Mosquito and Vector Control District on how you can protect yourself and pets from fleas.
- Author: Kathy Keatley Garvey
Photographers call the first hour after dawn and the last hour before dusk "The Golden Hour."
That's when the sunlight is softer and warmer.
It's also called "The Magic Hour."
Compare that to high noon, when the sun casts such strong highlights and shadows on the subject that even images of Miss Universe and Miss America look harsh.
Now if you photograph a golden honey bee during The Golden Hour, the world looks even warmer and softer.
But use the term, Golden Hour, figuratively. As Wikipedia explains: "The term hour is used figuratively; the effect has no clearly defined duration and varies according to season and latitude. The character of the lighting is determined by the sun's altitude, and the time for the sun to move from the horizon to a specified altitude depends on a location's latitude and the time of year. In Los Angeles, California, at an hour after sunrise or an hour before sunset, the sun has an altitude of about 10–12°. For a location closer to the Equator, the same altitude is reached in less than an hour, and for a location farther from the equator, the altitude is reached in more than one hour. For a location sufficiently far from the equator, the sun may not reach an altitude of 10°, and the golden hour lasts for the entire day in certain seasons."
The honey bee (below), foraging on a blanket flower, Gaillardia, couldn't discuss Golden Hours, seasons, latitude and longitude with you. But she knows how to return to her colony (which could be five miles away) and how to communicate with the other bees. And that, too, is Golden.
- Author: Kathy Keatley Garvey
In its larval stage, it's a pest of cole crops.
As an adult, it's like a little Cinderella.
That would be the cabbage white butterfly, Pieris rapae.
In the fairy tale, a ragged Cinderella lives with her selfish stepmother and two mean stepsisters. Cinderella wants to attend the palace ball, but has nothing appropriate to wear. So her fairy godmother waves a magic wand and transforms her into a beautifully gowned princess, complete with glass slippers. She rides in a magnificent carriage pulled by a team of beautiful horses, dances with the prince, and at the stroke of midnight (when the magic ends), she loses a glass slipper. You know the rest. It all ends with Cinderella and the prince exchanging marriage vows and living happily after.
This butterfly appears in the spotlight every January when UC Davis emeritus professor Art Shapiro hosts his annual "Beer for a Butterfly" contest. Collect the first live butterfly of the year in the three-county area of Sacramento, Yolo and Solano and win a pitcher of beer. (See Bug Squad blog) It's all part of his scientific research long-term studies of butterfly life cycles and climate change.
Meanwhile, we see the cabbage white butterfly fluttering around the garden throughout most of the year, stopping for a little nectar here, a little nectar there.
She still reminds us of Cinderella, with a long flowing gown. Sometimes she looks a little ragged when a predator snatches part of her gown. But her magic never seems to end.
- Author: Kathy Keatley Garvey
The bees.
When longtime beekeeper and retired teacher Ettamarie Peterson displayed a bee observation hive at the Vacaville Museum Guild's Children's Party, the youngsters, ages 3 to 9, got a taste of what it's like inside a bee colony--along with a taste of honey.
The youngsters singled out the queen bee, worker bees (females) and drones (males). They asked such questions as "Where's the queen?" and "Can they get out and hurt me?" and "How many bees are in there?"
Ettamarie, known as the "Queen Bee of Sonoma County," described the queen and pointed out "Look, she's laying eggs--she can lay 1000 eggs a day."
And she assured them that yes, the bees would be staying inside.
"I like to tell the public how they have a pipe through my barn wall so when they are not visiting events and schools they can fly if they are over three weeks old and then explain how in the spring and summer they live only three or so more weeks and make just a tiny bit of honey," she related. "Another question I usually get asked is if there are more than one queen and then I explain how there can be a daughter queen if the old one is about to die and show the photo of the queen cell with the royal jelly."
As for the number of bees, "Maybe 2000 but I told a guy on Saturday to count their legs and divide by 6!"
Ettamarie taught school for 37 years, has kept bees for 30 years, and has volunteered as the leader of a 4-H beekeeping project for the Liberty 4-H Club, Petaluma, for the past 25 years. Already this year she has caught 19 swarms and given them to the 4-H'ers.
Ettamarie said she "started beekeeping before I retired in 1998 from 37 years of teaching. “My teaching career was mostly in special education, following a few years teaching second and first grade. I became one of the first resource teachers in California back in 1980 after getting my master's degree in special education."
Ettamarie is also a longtime friend and supporter of UC Davis. She delivered a tribute to the late Eric Mussen (1946-2022), a 38-year California Cooperative Extension apiculturist and member of the Department of Entomology and Nematology faculty.
Active in the beekeeping industry, Ettamarie has served as president and treasurer of Sonoma County Beekeepers' Association (SCBA) and currently edits the SCBA newsletter, The Monthly Extractor. She and her husband, Ray (a non-beekeeper), enjoy life on the Peterson Ranch. "We've been married for 65 years and have 3 children, 9 grandchildren and 12 great grandchildren! What a wonderful life I have!”
While she chatted with the children and the adults, Dr. George Stock, a retired Vacaville-Fairfield physician costumed in a California Master Beekeeper Program bee suit, handed out honey sticks, gifts from the Z Food Specialty/The Hive, Woodland.
Peterson also shared scientific information (some the work of UC Davis emeritus professor Norm Gary), and a cut-out bee from the Sonoma Farm Bureau. Youngsters delighted in posing for pictures as a bee. They also switched to a butterfly (a cut-out banner of the California dogface butterfly loaned by the Bohart Museum of Entomology, UC Davis).
Pamela King and Diana McLaughlin co-chaired the children's party, themed "Fun on the Farm." The activities? The children petted the Vaca Valley Grange animals, blew bubbles, planted seeds, played a ring toss game, created chalk drawings, decorated paper crowns, and engaged with Mother Goose and the Vacaville Public Library staff. Meanwhile, the Rainbow Girls painted faces and the School of Rock presented a live perormance. A special treat: The Vacaville Police Department, Solano County Sheriff's Office and the California Highway Patrol provided them with replica law enforcement badges and other gifts. The CHP fitted the kids with free bicycle helmets.
All in all, it was a buzzworthy event.
I first heard the term on the local evening news in fall of 2018: Meteorologist Kris Kuyper was talking about hydrophobic soils. This potentially catastrophic natural phenomenon seems counterintuitive: soils which are damaged by the intense heat of fire become water repellent. Their post-fire inability to absorb and filter rainfall can cause problems with erosion and runoff. Adding insult to injury, fire also burns plant roots that can help stabilize the soil, and destroys plant stems and leaves that slow rainfall's contact with the ground surface, allowing more time for percolation into the soil.
According to an article by Douglas Kent (“First Aid for Sonoma County's Fire-Damaged Soil,” Santa Rosa Press Democrat, October 27, 2017), “erosion leaps as high as 200 percent following fires in urbanized areas.” The slopes and vales that comprise the mountain and foothill communities of our region mean that the immediate danger from water repellent soil comes in the form of flash flooding and the flow of debris and mud. Hydrophobia in burn-scarred soils makes them as water repellant as pavement, and the National Weather Service notes that it takes much less rainfall to cause a flash flood in post-fire landscapes. Their rule of thumb is “if you can look uphill from where you are and see a burned area, you are at risk.”
The type of soil and the intensity of the fire determine how deeply hydrophobia penetrates the soil, and how long the condition persists. Paradoxically, the fastest draining soils (light, sandy soils with large pores) are the most prone to post-fire hydrophobicity because they transmit the heat more easily than heavy, dense, clay soils.
The depth of hydrophobic soils can range from one-half inch to three inches, but a depth of about one inch is most common, according to the University of Idaho Cooperative Extension System's Fire No. 5 publication. In some cases, the water repellant soil layer lies a few inches under the soil surface. Although hydrophobic soils can take up to six years to recover their ability to absorb and filtrate rainfall, in most cases this recovery takes about one year. Regardless of the physiology of hydrophobicity, what matters most is how to mitigate its effects.
To hold your ground:
- Clear drainage systems such as culverts, diversion ditches, or narrow swales, of debris. Clogged drains are a primary cause of erosion, even without fire damage.
- Divert water from areas originally designed to sheet runoff to the landscape: instead, redirect the runoff towards your newly cleared drainage systems or, if they exist, towards storm drain systems such as gutters. Use sandbags, diversion ditches, boards stacked on top of one another and staked in place, dry stacked walls, or bales to redirect water flow.
- Minimize foot and equipment traffic on burned landscapes. Such traffic can further compact already damaged soils on flat areas, and can weaken soil bonds and dislodge soil particles on slopes. Develop plans to restore your injured landscape before tramping on it, and keep all traffic to the bare minimum during restoration activities.
- Leave non-toxic debris in place wherever possible. Burnt plant remnants and other garden features can protect the landscape from wind and water erosion, and help protect any seeds and plants that survived the fire.
For more information on dealing with the effects of wildfire on soil, and landscaping with the possibility of fire in mind, see the Fire-Safe Landscape section of the UC Master Gardeners of Butte County website. Among other resources, it contains a link to “The New Normal: Rebuilding Soil After Fire,” a PowerPoint presentation from the UC Master Gardeners of Sonoma County which covers how wildfires affect soil, soil regeneration, and strategies for dealing with toxic soil.
UC Master Gardeners of Butte County are part of the University of California Cooperative Extension (UCCE) system. To learn more about us and our upcoming events, and for help with gardening in our area visit our website. If you have a gardening question or problem, email the Hotline at mgbutte@ucanr.edu or leave a phone message on our Hotline at 530-552-5812. To speak to a Master Gardener about a gardening issue, or to drop by the MG office during Hotline hours, see the most current information on our Ask Us section of our website.