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Last Week in the Apiary - 2nd Week of January 2026

1/21/2026

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American Witch-hazel showing red flowers in bloom near the end of a  thin branch in January 2026.
Yellow flowers of Leatherleaf Mahonia blooming in January 2026.
American witch-hazel and leatherleaf mahonia in bloom in January of 2026. Picture by Dennis vanEngelsdorp, Berwyn Heights, MD. 
Time in the Yard: 0 minutes
Time in the Barn: 0 minutes
Total Colonies:
27
Hi Temp:
53°
Low Temp:
19°
Avg Temp:
36.6°
​Total Precipitation
: 0.95”
Actions:
No bee work done.

Observations:
Most of this week was warm enough to briefly open the inner cover or hinge open the top box to check mortality and food stores.

Reflections:
The warmer weather this week may be cause to check fondant status sooner than we were planning.
​

Things in bloom:
Leatherleaf Mahonia, American Witch-hazel
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Last Week in the Apiary - 1st Week of January 2026

1/12/2026

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A single hive in an apiary with leafless trees in the background. The front of the hive is busy with honey bees on the front and in flight returning and exiting the hive.
An active hive on a 61° day in January. Photo by Eric Malcolm, January 7, 2026. 
Time in the Yard: 0 minutes
Time in the Barn: 5 hours 15 minutes
Total Colonies: 27
Hi Temp: 61°
Low Temp: 22°
Avg Temp: 37.86°
​Total Precipitation: 0.04”
Actions: 
Very briefly checked yards and replaced 2 tops that were blown off by the wind and checked entrances for activity, peaked under a few lids to check fondant consumption.In the barn; reassembled the clean and dry top feeders and stacked them in the pole barn. Cleaned two old chest freezers (broken) to make space for a replacement chest freezer. Took time to plan the first part of the season; looking at spring treatment supplies, planning splits to increase colony numbers and avoid losing swarms, and preparing for ordering queens. Cleaned up overgrowth around hives at one apiary.
Observations: 
Hives were very active on the warmest day this week! The few hives that were checked have not consumed much/any fondant since it was applied on 12/19/2025.

Reflections:
Checking on the colonies and doing a little outdoor “housekeeping” on a warm day is a treat in early January! It is also refreshing to have a quiet moment to plan and prepare for the 2026 beekeeping season. 
​

Things in bloom: 
Japanese Camellia, Leatherleaf Mahonia
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Last Week in the Apiary - 5th Week of December 2025

1/8/2026

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Japanese Camellia in bloom in early January 2026. Some pink blooms have started turning brown while others are just beginning to bloom.
3 Leatherleaf Mahonia plants in a garden that are all in bloom with stems of yellow flowers at various stages of bloom.
Japanese Camellia and Leatherleaf Mahonia in bloom in early winter. Photo by Dennis vanEngelsdorp, January 6, 2026.
Time in the Yard: 0 minutes
Total Colonies:
27
Avg Temp:
34.2°
​Total Precipitation
: 0”
Actions: 
No bee work done. UMD on Winter Break. 

Reflections:
This down time reminded us to plan ahead for putting new foundation in frames that need to be drawn this season. Spring will be here before we know it, and bees will be ready to draw new comb!
 
Things in bloom: 
Japanese Camellia, Leatherleaf Mahonia
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Last Week in the Apiary - 4th Week of December 2025

1/8/2026

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A close up of a pink Japanese Camellia in the winter. There is a small patch of melting snow on one of its leaves next to the bloom.
A close up image of Leatherleaf Mahonia in bloom. Flowering stems covered in yellow blooms and buds.
Pictures of the pink bloom of a Japanese Camellia and the yellow flowers of a Leatherleaf Mahonia. Photos by Dennis vanEngelsdorp, 12/16/2025
Time in the Yard: 0 minutes
Total Colonies:
27
Avg Temp:
38.35°
​Total Precipitation
: 0”
Actions: 
No bee work done. UMD on Winter Break. 

Reflections:
We are thinking about repairing equipment, assembling woodenware, ordering spring treatment supplies, and getting any other necessary equipment ordered once we return from break. 

Things in bloom: 
Japanese Camellia, Leatherleaf Mahonia
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Last Week in the Apiary - 3rd Week of December 2025

1/8/2026

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A 50lb box of 90/10 Creme Fondant, by Golden Barrel Products.
A box of creme fondant waiting to be separated into 4lb patties to be fed to the bees! Photo by Eric Malcolm, January 6, 2026
Time in the Yard: 31 minutes
Avg Time per Colony: 2.5 minutes
Time in the Barn: 3 hours
Total Colonies: 27
Avg Temp: 32.5°
​Total Precipitation: 0.41”
Actions: 
Fed 4lbs of fondant to colonies (12) that had bees at or near the top of the uppermost box. In the barn; cleaned top feeders and stacked to dry and met with pest control specialists for mouse control support. 

Observations: 
Several colonies have consumed much of their food stores. Over half of our colonies still had ample food stores but may require feeding later. 

Reflections:
Checking below the inner cover during the colder season to monitor food store status and cluster location have helped to stay on top of timely feeding. 

Things in bloom:
Japanese Camellia, Leatherleaf Mahonia
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Last Week in the Apiary - 2nd Week of December 2025

1/8/2026

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Image of deep and medium hive boxes, standing on their sides in pairs, with two additional boxes standing on their sides. At the point where the boxes meet the base (ground or first row of boxes) dark bits of wax can be seen left behind from mouse damage.
Wax from mouse damage can be seen around the bases of the hive boxes that were stacked after treatment pre-storage. Photo by Eric Malcolm, December 10, 2025. 
Time in the Yard: 44 minutes
Avg Time per Colony: 2.5 minutes
Time in the Barn: 45 minutes
Total Colonies: 27
Avg Temp: 31°
​Total Precipitation: 0.0”
Actions: 
Removed top feeders from colonies (19) and applied Gorilla Tape to holes in equipment (2) to reduce draft. Emptied remaining syrup from top feeders. In the barn; cleaned up wax from mouse damaged frames and stacked boxes to prevent further damage. 

Observations: 
Bees were clustered tightly, and most clusters were in the lower box. A few colonies appear to have not stored as much syrup and were already towards the top of their hive. Many colonies did not finish taking in the last round of 2:1 syrup. In the barn, noticed mice had damaged comb sometime within the last 2 weeks. 

Reflections:
We wish we would have stored the equipment as soon as the B402 Certan dried to avoid the mouse damage. 
We will need to feed several colonies fondant before the holidays. 

Things in bloom: 
Japanese Camellia, Leatherleaf Mahonia
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Last Week in the Apiary - 1st Week of December 2025

1/8/2026

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A small patch of white Sweet Alyssum flowers.
Photo: Sweet Alyssum, University of Wisconsin-Madison Extension
Time in the Yard: 0 minutes
Total Colonies: 27
Avg Temp: 34.07°
​
Total Precipitation: 0.94”
Actions:
No bee work done this week. Apiary Manager away at conference.

Reflections:
Late fall and winter are great times to invest in beekeeping education: take classes, read beekeeping books, watch presentations or videos, and attend conferences that help inform and improve our beekeeping practices at home.
​

Things in bloom: Sweet Alyssum
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Last Week in the Apiary - 4th Week of November 2025

12/8/2025

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A beehive hinged opened on a warmer fall day shows a cluster of bees in the center of the hive between and around the frames.
Bees clustered in the hive on a fall day. Photo by Eric Malcolm, November 25, 2025
Time in the Yard: 0 minutes
Total Colonies: 27
Avg Temp:
44.5°
Total Precipitation
: 0.24”
Notes:

​With the bees fed and treated, our next planned management will be to provide fondant as a back-up food source – just in case.

Actions:
No bee work done this week.
Thanksgiving break.
Observations:
A quick off-site hive check on a warm day revealed a colony in a cluster. 


Reflections:

We hope you had a wonderful Thanksgiving and are grateful for your support!


​Things in bloom:
Alyssum
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Last Week in the Apiary - 3rd Week of November 2025

12/2/2025

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A close up view at the corner of a beehive box with a hole, about the size of a quarter, where the wood has rotted and chipped away.
The worst of the damaged woodenware in the field. The bees used this hole as their primary entrance for the majority of the season. Photo by Eric Malcolm, November 12, 2025. 
Time in the Yard: 0 minutes
Total Colonies: 27
Avg Temp:
45.2°
​Total Precipitation
: 0.48”
Actions:
No bee work done this week.

Observations:
With daytime highs becoming steadily cooler, we decided to hold off on replacing the damaged boxes in our operation until warmer weather to avoid disturbing the clustered colonies.

Reflections:
We are glad that we got the bees fed prior to the weather getting cold but wish we swapped the remaining damaged equipment sooner to provide a more weather tight structure for winter. We will apply duct tape as a temporary solution.

Things in bloom: Japanese Camellia, Sasanqua Camellia

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Last Week in the Apiary - 2nd Week of November 2025

11/17/2025

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A top down view of a top feeder looking down the center slot. Bees are congregated at the bottom of the feeder slot immediately after feeder has been refilled with 2:1 syrup.
Feeding the last round of 2:1 syrup with bees at the bottom of the feeder. Photo by Eric Malcolm, November 13, 2025. 
Time in the Yard: 1 hour 14 minutes
Avg Time per Colony: 3 minutes
Time in Barn: 6 hours
Total Colonies: 27
Avg Temp: 45.8°
Total Precipitation: 0.05”

Note: We did not have time this week to switch out damaged equipment due to time limitations. We will plan to replace equipment in the spring.
Actions:
​Mixed 53 gallons of 2:1 syrup using a 50 gallon drum mixer and large aluminum pot set up. Fed colonies (24) 2 gallons of 2:1 syrup each.
  • Treated colonies (6) with Api-Bioxal (oxalic acid dihydrate), 4 grams per brood box. Vaporization method.

Observations:
Bees are much less active outside of the hive during the cooler days. We only did a second round of OAV treatments on colonies with high mite loads from our final mite checks performed in October.

Reflections:
Feeding does not take nearly as much time as making 2:1 syrup!
​
Things in bloom: Japanese Camellia, Sasanqua Camellia, Common Chrysanthemum
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Last Week in the Apiary - 1st Week of November 2025

11/11/2025

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A beehive being treated with ApiBioxal using a battery powered Oxalic Acid vaporizer, which is hanging off of the front of the hive entrance. The applicator nozzle is inserted into a small hole in a homemade entrance and screened bottom board cover to prevent vapor from escaping during treatment. On top of the hive is a hive tool, second plunger to administer the correct dose of oxalic acid dihydrate, a brick, and a broken entrance reducer.
Treating colonies with a battery powered oxalic acid vaporizer and insert to cover the entrance and openings of the screened bottom board. Photo by Eric Malcolm,  November 5, 2025.
Time in the Yard: 2 hours 22 minutes
Avg Time per Colony: 5.26 minutes
Total Colonies: 27
Avg Temp: 50.6°
Total Precipitation: 0.27”

​Note: To legally apply the new dosage for Api-Bioxal, beekeepers are required to have the product with the new label affixed by the manufacturing facility. 
Actions:
Confirmed colonies were alive and applied Oxalic Acid Vaporization (OAV) treatments. Took records of hive boxes that needed to be replaced prior to winter.
  • Treated colonies (27) with 4g of Api-Bioxal (oxalic acid dihydrate) per brood box. Vaporization method used.

​Observations:
Our newly purchased Api-Bioxal application instructions include updated dosage of 4g per brood chamber. Some colonies had little or no entrance activity while others were very active. All except one colony was of a gentle temperament during treatment.

Reflections:
Weather is slowly getting cooler and we’re planning to get one more round of 2:1 on before switching to feeding fondant.

Things in bloom:
Common Chrysanthemum, Tatarian Aster, Elegant Zinnia, Yellow Cosmos, Common Yarrow, Japanese Camellia, Sasanqua Camellia
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Last Week in the Apiary - 5th Week of October 2025

11/3/2025

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Apiary manager, Eric Malcolm, pouring about 2 gallons of 2:1 syrup from a white 6 gallon bucket into a top feeder on top of a beehive. The beehive is centered in the picture and surrounded by agricultural fields and trees line the background.
Feeding the bees 2:1 syrup using a top feeder. Photo by Eric Malcolm, October 27, 2025.
Time in the Yard: 3 hours 12 minutes
Avg Time per Colony: 8.35 minutes
Time in the Barn: 6 hours 15 minutes
Total Colonies: 27
Avg Temp: 51.4°
Total Precipitation: 1.08”

​Note:
​
Bees fed 2 days earlier in the week were nearly halfway through their 2:1 on the 3rd day! Feed your bees if they’re not HEAVY. 
Actions:
Cleaned up dead out equipment that was stored in the barn, culled frames with wax moth damage and culled broken hive bodies.
  • Treated stored brood frames with B402 Certan and set out to dry, in preparation for winter storage.
Made 45gal of 2:1. Fed 2 gallons of 2:1 syrup each (22). Combined weak colony (1).
​

Observations:
Bees were not very active outside of the hive during the cooler days but had many bees inside. Without use of smoke, bees were quick to (briefly) show signs of alarm. 2 colonies were still heavy with food stores. One colony absconded.

Reflections:
Wax moths have been very active on the equipment stored indoors. Next season, we will plan to freeze, then treat frames with B402 Certan as soon as they come out of the yard, if they can not be used on other hives immediately.

Things in bloom:
Chicory, New England Aster, Panicled Aster, Aromatic Aster, Black-eyed Susan, Gray Goldenrod, Common Chrysanthemum, Tatarian Aster, Elegant Zinnia
A close up of three honey bees on the ventilation hole of the inner cover at the top of their hive showing exposed stingers following the quick removal of the telescoping outer lid.
Bonus picture: Honey bees releasing alarm pheromone upon the removal of a telescoping lid. They calmed down immediately after. Photo by Eric Malcolm, October 27, 2025. 
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October 2025 Varroa and Nosema Results

10/30/2025

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Varroa Diagnostic Results - October 2025

A plot graph showing APHIS 3 year averages compared to the UMD Bee Lab yearly averages.  UMD's October average mite loads are 2.22 mites per hundred bees, compared to the APHIS 3 year average of over 4 mites per hundred bees.
Picture

Nosema Diagnostic Results - October 2025

A plot graph showing the APHIS 3 year average and UMD Bee Lab's average Nosema loads.  UMD Bee Lab's average Nosema load is 0.72 million spores per bee compared to the APHIS 3 year average of less than 0.3 million spores per bee.
Picture
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Last Week in the Apiary - 4th Week of October 2025

10/30/2025

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A building with brown metal siding, large white bay garage door and a small white front door. The UMD Bee Lab
"The Barn" view from the front. Photo by Eric Malcolm
Time in the Barn: 6 hours 30 minutes
Total Colonies: 29
Avg Temp: 55.4°
Total Precipitation: 0.31”

Note:
If colonies feel light when lifted or hefted this time of year, you should feed 2:1 as soon as possible and have candy boards, sugar, or fondant on hand to feed throughout winter. 

Actions:
Cleaned up the barn and reorganized. Purchased 300lbs of sugar to prepare 2:1. Reviewed records regarding colony weight to prepare to feed. Reviewed lab diagnostics reports to prepare to treat colonies above threshold. ​

Observations:
Records show colonies are lighter than anticipated and while most colonies are below Varroa damage threshold, there are still 7 colonies with mite loads between 3 and 9.5 mites per 100 bees (3% - 9.5% mite load), which is above threshold.

Reflections:
Mite pressure has been high and constant in our yards this year. We have lost several colonies during the summer while undergoing a new treatment that did not have the effect we expected and are now working hard to get each colony’s mite loads back to a manageable number.

Things in bloom:
Chicory, New England Aster, Panicled Aster, Aromatic Aster, Black-eyed Susan, Gray Goldenrod, Hairy White Oldfield Aster, Common Chrysanthemum, Tatarian Aster, Elegant Zinnia, Yellow Cosmos
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Last Week in the Apiary - 3rd Week of October 2025

10/28/2025

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Image of two frames from the same colony, placed perpendicular on top of the hive. Each frame is about half covered with bees and has a Queen bee marked with a blue dot. Both were found in the hive on different frames while conducting a health inspection.
Time in the Yard: 7 hours 21 minutes
Avg Time per Colony: 17.6 minutes
Total Colonies: 29
Avg Temp: 59.6°
Total Precipitation: 0.12”
​

Note: We will return to check queen status on colonies noted as "Queen Not Seen".

A colony with two queens in the process of supersedure. Look closely for the Queen marked with a blue dot on each of the frames facing the camera. Photo by Eric Malcolm, October 16, 2025. 
Actions:
Checked queen acceptance in requeened colonies (2), checked banked queen (1), combined weak colony (1), requeened queenless colony (1), inspected and sampled for Varroa, Nosema, and Viral Project (21), sampled colonies for another research project (7). Checked individual colony weight to get ready to feed. 

Observations:
Both new queens were accepted and laying, banked queen was released and killed. Colonies are going through food stores quickly and most will require feeding. Several colonies were noted as Queen Not Seen (QNS) indicating no eggs or queen seen, though the colony was behaving as Queen Right. Queens will often stop laying in the fall as cold weather approaches and nectar becomes scarce. 

Reflections:
Made the mistake of laying a banked queen cage down on its side, above an excluder, but forgot to cover the fondant plug - new queen was found released by workers and deceased. 

​Things in bloom:
Chicory, New England Aster, Groundsel Tree, Panicled Aster, Aromatic Aster, Black-eyed Susan, Gray Goldenrod, Hairy White Oldfield Aster, Common Chrysanthemum, Tatarian Aster, Elegant Zinnia, Yellow Cosmos
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