Rain, cold can send ants indoors
This is a screenshot from one of UCIPM's short videos on managing ants. Longer ones also are viewable on YouTube. Screenshot from UCIPM video "How to effectively control ants."
The first ones showed up on a shelf in the spice cabinet. They were easily dispatched. Then a few more appeared along the cupboard above the refrigerator, which is next to the coffee bar. They were easily removed, too, but I decided to relocate the just-refilled sugar bowl across the kitchen.
You know what happened next, right? The following day some intrepid ants had found the sugar bowl, and there was a thin line of their colleagues along the edge of the ceiling and down to the counter where the sugar now was. The battle was on.
With all the rain we’ve had, it’s a wonder the ants hadn’t invaded sooner. But these – very likely common Argentine ants – apparently were driven inside by the low-30s temperatures we’ve had this past week.
Fortunately, some quick work interrupted their incursion and they haven’t reappeared. (Knock on wood!) But it’s a good reminder that not every insect is dormant in winter. Pests live among us year-round, and it helps to be vigilant without resorting to overkill, i.e. pesticides.
The University of California Integrated Pest Management program offers a wealth of information on dealing with household and garden pests. UCIPM has pages and pages devoted to ants on the website, as well as several YouTube videos – quick 1-minute hits as well as longer explainers.
Part of the defense against ants indoors should be to remove whatever’s attracting them – pet food, cookie crumbs, (ahem) sugar bowl – then wipe the ants up with a soapy cloth or sponge, or use window cleaner. This destroys the trail being left for other ants. Also, try to find where they’re coming from outside, and caulk or block the entrance. Ant traps left near entrances will slow them down, though IPM experts note that it may take a week or so for traps to work. They caution against spraying for ants inside the home.
UC IPM presents a monthly Urban and Community Webinar on pest topics; past ones are recorded for later viewing. (Ants were discussed in October 2021.)
Here are the pest topics through April, all scheduled for noon to 1 p.m. Register at the Webinar link above to view them live.
Thursday, Feb. 16, “Dealing With Pantry Pests.”
Thursday, March 16, “Preventing Pest Problems at Seeding.”
Thursday, April 20, “Aphids, Scales and Mealybugs, Oh My.”
Meanwhile I’m on watch against future invaders – and replacing the sugar bowl with one featuring an airtight seal.
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Flowers in My Back Yard Series
May 26: Zinnias are the summer flowers every garden needs
May 19: Plant dahlias now for late-summer flower power
May 12: Know your coreopsis from your bidens
May 5: Mums the word on Mother's Day weekend
April 28: Majestic Matilija poppy is worth a look
April 21: Celebrate roses, America's favorite flower
April 14: Small flowers with outsized impact
April 7: Calendulas do double duty
April 3: Make Easter lilies last for years to come
March 31: In praise of a pollinator magnet (small-leaf salvias)
March 24: Azaleas brighten shady spots
March 17: The perfect flower for beginners? Try zonal geraniums
March 10: Keep camellias happy for years to come
March 3: Fruit tree blossoms are a fleeting joy
Feb. 27: Are your roses looking rusty?
Feb. 24: Treasure spring daffodils now and for years to come
Feb. 17: How and why to grow wildflowers
Feb. 10: Let's talk Valentine's Day roses
Feb. 3: Why grow flowers?
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Garden checklist for week of May 31
Remember to water early. No more rain is in the immediate forecast.
* It’s not too late to transplant tomatoes, peppers, eggplant or other summer favorites. Make sure they stay hydrated.
* From seed, plant corn, melons, pumpkins, radishes, squash and sunflowers.
* Plant basil to go with your tomatoes.
* Transplant summer annuals such as petunias, marigolds and zinnias.
* It’s also a good time to transplant perennial flowers including astilbe, columbine, coneflowers, coreopsis, dahlias, rudbeckia, salvia and verbena.
* Let the grass grow longer. Set the mower blades high to reduce stress on your lawn during summer heat. To cut down on evaporation, water your lawn deeply during the early hours of the morning, between 2 and 8 a.m.
* Tie up vines and stake tall plants such as gladiolus and lilies. That gives their heavy flowers some support.
* Dig and divide crowded bulbs after the tops have died down.
* Feed summer flowers with a slow-release fertilizer.
* Mulch, mulch, mulch! This “blanket” keeps moisture in the soil longer and helps your plants cope during hot weather.
* Cut back fruit-bearing canes on berries.
* Feed camellias, azaleas and other acid-loving plants. Mulch to conserve moisture and reduce heat stress.
* Cut back Shasta daisies after flowering to encourage a second bloom in the fall.
* Trim off dead flowers from rose bushes to keep them blooming through the summer. Roses also benefit from deep watering and feeding now. A top dressing of aged compost will keep them happy. It feeds as well as keeps roots moist.
* Pinch back chrysanthemums for bushier plants with many more flowers in September.
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Food in My Back Yard (FIMBY) Series
Lessons learned during a year of edible gardening
WINTER
Is edible gardening possible indoors?
Hints for choosing tomato seeds
Why winter is the perfect time to plant fruit trees
When to plant? Consider staggering your transplants
How to squeeze more food into less space
Plant a fruit tree now -- for later
Win the weed war by tackling them in winter
Tips for planting bare-root trees, shrubs and vegetables
Time to give vegetable seedlings some more space
Ways to win the fight against weeds
FALL
Dec. 16: Add asparagus to your edible garden
Dec. 9: Soggy soil and what to do about it
Dec. 2: Plant artichokes now; enjoy for years to come
Nov. 25: It's late November, and your peach tree needs spraying
Nov. 18: What to do with all those fallen leaves?
Nov. 11: Prepare now for colder weather in the edible garden
Nov. 4: Plant a pea patch for you and your garden
Oct. 27: As citrus season begins, advice for backyard growers
Oct. 20: Change is in the autumn air
Oct. 13: We don't talk (enough) about beets
Oct. 6: Fava beans do double duty
Sept. 30: Seeds or transplants for cool-season veggies?
Sept. 23: How to prolong the fall tomato harvest
SUMMER
Sept. 16: Time to shut it down?
Sept. 9: How to get the most out of your pumpkin patch
Sept. 2: Summer-to-fall transition time for evaluation, planning
Aug. 26: To pick or not to pick those tomatoes?
Aug. 19: Put worms to work for you
Aug. 12: Grow food while saving water
Aug. 5: Enhance your food with edible flowers
July 29: Why won't my tomatoes turn red?
July 22: A squash plant has mosaic virus, and it's not pretty
July 15: Does this plant need water?
July 8: Tear out that sad plant or baby it? Midsummer decisions
July 1: How to grow summer salad greens
June 24: Weird stuff that's perfectly normal
SPRING
June 17: Help pollinators help your garden
June 10: Battling early-season tomato pests
June 3: Make your own compost
May 27: Where are the bees when you need them?
May 20: How to help tomatoes thrive on hot days
May 13: Your plants can tell you more than any calendar can
May 6: Maintain soil moisture with mulch for garden success
April 29: What's (already) wrong with my tomato plants?
April 22: Should you stock up on fertilizer? (Yes!)
April 15: Grow culinary herbs in containers
April 8: When to plant summer vegetables
April 1: Don't be fooled by these garden myths
March 25: Fertilizer tips: How to 'feed' your vegetables for healthy growth