UMD Bee Lab
  • UMD Bee Lab
    • Home
    • Donate
    • Lab Personnel
    • Graduate Students
  • Research
    • Publications
    • National Honey Bee Disease Survey
    • US Bee Data
    • Campus Bee Survey
  • Extension
    • MD Sentinel Program >
      • Sentinel Resources
    • Last Week in the Apiary >
      • Things In Bloom
      • Get Notifications
      • About LWITA
    • Recordkeeping Tools
    • Honey Shop
    • Updates / Blog
    • FAQ / Links
    • PollinaTerps
  • Services
    • Diagnostic Services
  • Contact
    • Request Speaker
    • Lab Opportunities
    • Contact Form
    • Swarm Removal

Last Week in the Apiary - 4th Week of April 2026

4/30/2026

0 Comments

 
Three colonies on a concrete slab, each with a deep and medium box brood chamber, queen excluders, and three honey supers on.
An early start to the nectar flow led to us quickly supering colonies. Photo by Eric Malcolm, April 27, 2026.
Time in the Yard: 1 hours 1 minute
Avg Time per Colony: 3 minutes
Total Colonies:
66
Temperature (°F):
Hi:
83°
Low:
27°
Avg:
57.6°
Total Precipitation
: 0.23”
Actions:
Added queen excluders and 1-3 supers per overwintered hive, based on population (n=24).​

Observations:
Our main sources of nectar and several other plants observed last year began blooming early. On Monday, despite being overcast with scattered light showers, bees were not at all defensive as we removed tops and quickly added excluders and supers without the use of smokers. We thought this may be due to them being content with foraging the abundant resources.

Reflections:
We thought we had more time before the nectar flow began (looking at previous years) but since the blooms came early, we had to move quickly to get supers installed in order to take advantage of the early nectar resources.

Things in bloom:
Purple Deadnettle, Common Stork’s bill, European Field Pansy, Dandelion, Grape Hyacinth, Wisteria, Shepherd’s Purse, Lilac, Henbit deadnettle, Lenten Rose, Star of Bethlehem, Purple Crown Vetch, Japanese Snowball, Paulownia, Black Locust, Black Cherry, Amur Honeysuckle, Amur Maple, Tulip Poplar, Russian Sage, Burning Bush, Golden Alexander
0 Comments

Last Week in the Apiary - 3rd Week of April 2026

4/23/2026

0 Comments

 
A frame of brood with several capped emergency queen cells lined up on the right side of the image, mostly along the bottom of the capped brood area.
Emergency queen cells several days after queens were removed during spring splits. Photo by Eric Malcolm, April 15, 2026
Time in the Yard: 17 hours 33 minutes
Avg Time per Colony: 17.5 minutes
Total Colonies: 66
Temperature (°F):
Hi:
90°
Low: 41°
Avg: 67.3°
Total Precipitation: 0”

Notes:
​
We inspected and removed every queen cell (we hope!) to prevent the hives from requeening themselves and rejecting the newly introduced mated queens. 
Actions:
Over the course of 3 days: Made nucs from splits (n=2). Hived all nucs made from this and last week’s splits (n=6). Pulled (n=7) and pinched (n=26) queens and checked colonies for queen cells (n=56). Removed emergency, supersedure, or swarm queen cells (n=18) in preparation to introduce newly arrived queens. After colonies were queenless for at least 24 hours, we requeened colonies (n=58).

Observations:
Colonies where queens were pulled last week all had capped or nearly capped emergency queen cells. Found one queen in a colony we installed from a package in the process of being balled. Two of Maryland’s primary nectar sources began to bloom (black locust, black cherry) on Friday of this week, which felt very early to us. Colony temperaments were almost entirely 4+ out of 5 (very gentle).

Reflections:
Another busy week in the bees! There were 7 queens that overwintered from the previous season that were laying excellent brood patterns and whose colonies had very gentle temperaments. We would normally have kept them in a split or nucs to continue being productive members of the operation. Unfortunately, we did not make proper transportation arrangements or have additional hives prepared after an already significant expansion, and the pulled queens died shortly after being removed from their colonies. This will encourage us to be better prepared to accommodate queens being removed from their colonies when splits are not being made promptly. Not much breaks our heart in beekeeping, but losing an exceptional queen is one of them. ​

Things in bloom: Purple Deadnettle, Common Stork’s bill, European Field Pansy, Dandelion, Lesser Celandine, Grape Hyacinth, Japanese Andromeda, Kanzan Cherry, Eastern Redbud, Wisteria, Giant Snowflake, Shepherd’s Purse, Lilac, Norway Maple, Henbit deadnettle, American Sweetgum, Lenten Rose, Star of Bethlehem, Autumn Olive, Purple Crown Vetch, Japanese Snowball, Paulownia, Black Locust, Black Cherry
A close up image of a small cluster of bees in the process of balling a queen, while on a frame of comb. The queen's abdomen is partially visible for a moment and was captured by the photo.
A queen, in a recently installed colony from a package, found while being balled by the workers. Photo by Eric Malcolm, April 16, 2026.  
0 Comments

April 14th, 2026

4/14/2026

0 Comments

 
6 swarm cells, removed from their frames, sitting on top of a hive cover.
Swarm cells removed from one colony during splitting. Photo by Eric Malcolm, April 10, 2026.
Time in the Yard: 13 hours 03 minutes
Avg Time per Colony:
13 minutes
Total Colonies:
60
Temperature (°F):
Hi:
86°
Low:
30°
Avg:
54.07°
​Total Precipitation
: 0.62”
Actions:
Monitored colonies (n=16) to prep to split as they prepare to swarm. Made splits (n=11) from overwintered colonies, including making 3-4 FOB splits (n=6), equal in size and resources to the 28 existing project colonies. Checked project colonies recently installed from packages (n=28) for queen acceptance or absconding. Culled emergency queen cells from splits that were left queenless (n=2).
  • Treated project colonies (n=30) from packages with Oxalic Acid Vapor, 4g each.
  • Fed project colonies 1 gallon of 1:1 (n=30)

Observations:
A lot of colonies were preparing to swarm. Our main factor for deciding when to make splits was finding charged swarm cells with eggs or larvae present. In a 1 deep and 1 medium box hive, the average population was usually around 16.5 FOBs, which is every frame full of bees. One additional package colony absconded. Temperament of most colonies has been wonderful and pleasant to work with minimal hand protection.

Reflections:
This was the busiest week in the bees yet this year. With more colonies and more various tasks that must be done based on where each colony is at with their growth, we are relying heavily on our records for making management decisions like what colonies need to be split (and when), what colonies will need to have emergency queen cells culled prior to requeening next week, and which queens we want to keep in the operation and where they are located after all of the splitting and moving. Still finding that monitoring is key to understanding the rate of growth of individual colonies and when they will need to be split to avoid losing the swarms. 

Things in bloom:
Purple Deadnettle, Wild Daffodil, Ivy-leaved Speedwell, Hairy Bittercress, Oriental Paperbush, Forsythia, Common Stork’s bill, European Field Pansy, Dandelion, Lesser Celandine, Garlic Penny-cress, Saucer Magnolia, Yoshino Cherry, Grape Hyacinth, Japanese Andromeda, Kanzan Cherry, Eastern Redbud, Wisteria, Giant Snowflake, Shepherd’s Purse, Lilac, Norway Maple, Henbit deadnettle, American Sweetgum, Eastern Redbud, Lenten Rose, Blackhaw Viburnum
0 Comments

Last Week in the Apiary - 1st Week of April 2026

4/6/2026

0 Comments

 
An open beehive with a shim in place from winter feeding. There are lots of burr comb drawn between the top of the frames and the inner cover, claiming the space left by the shim..
A rapidly growing colony filling the space between a shim from winter feeding and the inner cover. Photo by Eric Malcolm, April 3, 2026.
Time in the Yard: 9 hours 30 minutes
Avg Time per Colony: 11 minutes
Total Colonies: 53
Temperature (°F):
Hi: 87°
Low: 26°
Avg: 57.7°
​
Total Precipitation: 0.06”

Actions:
Installed packages (n=30) in preparation for a project. Weeded and removed dead wood and grasses from two yards. Checked colonies for signs of swarming (n= 18). Split 3 colonies that had swarm cells with eggs or larvae present. Performed mite washes on overwintered colonies (n=3) that exhibited defensive temperaments or spotty brood patterns.
  • Fed all remaining packages (n=26) 1 gallon of 1:1 syrup
  • Applied Formic Acid (n=1) when alcohol wash results revealed 2.33% mite load (2.33 mites per 100 bees)

Observations:
Four packages absconded after installation. The commonality between them was the queen cage was installed directly below the feeder can and queens and cages were soaked. We saw many swarm cups (no eggs), some were primed with a small drop of honey. Two out of three mite washes had .33 or fewer mites per 100 bees. Our action threshold is 2 mites per 100 bees (2%) or higher. There were lots of nectar, pollen, and brood of all stages in the colonies. Many should be prepared to split by next week.

Reflections:
It is important to respect our bodies and limitations when they tell us it’s time to take a break… and I’m sure we will as soon as the beekeeping season is over. Monitoring colony growth and checking and managing mite loads early are all good steps to ensure a great start to your beekeeping season.

Things in bloom:
Red Maple, Purple Deadnettle, Wild Daffodil, Ivy-leaved Speedwell, Hairy Bittercress, Saucer Magnolia, Oriental Paperbush, Forsythia, Bradford Pear, Common Stork’s bill, European Field Pansy, Dandelion, Lesser Celandine, Garlic Penny-cress, Star Magnolia, Saucer Magnolia, Okame Cherry, Yoshino Cherry, Grape Hyacinth, Japanese Andromeda
​
0 Comments

Last Week in the Apiary - 4th Week of March 2026

4/2/2026

0 Comments

 
A queen with a light blue marking on her thorax has wings that appear to be a little tattered on the ends. She is surrounded by busy workers and a few attendants.
A close up of a blue marked queen with tattered wings spotted this week during inspections. Photo by Eric Malcolm, March 26, 2026 
Time in the Yard: 4 hours 10 minutes
Avg Time per Colony:
17 minutes
Time in Barn:
8 hours 15 minutes
Total Colonies:
23
Temperature (°F):
Hi:
80°
Low:
32°
Avg:
53.2°
​Total Precipitation
: 0.24”
Actions:
In the yard: Performed full inspections (n=15) to get an idea of colony strength and when they will be ready to split. Added space to strong hives. Consolidated brood into bottom box of smaller colonies.
In the
barn: Gathered deep boxes with drawn comb and foundation. Cleaned old frames, put in new foundation, and applied wax.

Observations:
Not much pollen sub was consumed after last week’s feeding. Lots of drones have emerged. Saw signs of swarm preparation including very few swarm cells with eggs and swarm cups containing very small amounts of honey.

Reflections:
Seeing the variation of swarm preparation in our colonies really emphasizes the importance to monitor colony growth and population in the early spring to help avoid losing colonies and resources to swarms.

Things in bloom: Silver Maple, Red Maple, Purple Deadnettle, Wild Daffodil, Ivy-leaved Speedwell, Hairy Bittercress, Apricot, Saucer Magnolia, Oriental Paperbush, Forsythia, Bradford Pear, Common Stork’s bill, European Field Pansy, Dandelion, Hellebore, Weeping Cherry, Weeping Willow, Pussy Willow, Lesser Celandine, Garlic Penny-cress, Star Magnolia, Saucer Magnolia, Grape Hyacinth, Japanese Andromeda
0 Comments
    Things In Bloom
    ​
    Get Notifications

    Archives

    May 2026
    April 2026
    March 2026
    February 2026
    January 2026
    December 2025
    November 2025
    October 2025
    September 2025
    August 2025
    July 2025
    June 2025
    May 2025
    April 2025
    March 2025
    February 2025
    January 2025