| | Date Submitted | City | State/province | Type | Milkweed | Comments |
|
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| 7/7/2026
| Simcoe
| ON
| Monarchs
| Asclepias syriaca | Street corner which receives some foot traffic. Mature milkweeds flowering. |
|
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| 7/3/2026
| Brighton
| CO
| Monarchs
| | I observed 4 small eggs on 1 plant |
|
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| 7/5/2026
| Kearney
| ON
| Monarchs
| Asclepias syriaca | Milkweed growing in a rocky slope near the water's edge. Larvae were found on two adjacent plants. Lots of evidence of larvae feeding but no others found. |
|
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| 7/1/2026
| Delmar
| NY
| Monarchs
| Common Milkweed | 90 degrees F
start time 3pm |
|
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| 6/23/2026
| Brighton
| CO
| Other
| Snowy Milkweed | I didn't observe any monarch eggs or larvae today |
|
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| 6/24/2026
| Bumpass
| VA
| Monarchs
| Swamp milkweed | Healthy and eating lots of milkweed - my first year to observe them! |
|
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| 7/2/2026
| Prompton
| PA
| Other
| Common Milkweed | Observed Adult Monarch Butterfly Flying around a patch of milkweed and meadowsweet flowers |
|
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| 7/2/2026
| Prompton
| PA
| Other
| No milkweed was observed | No milkweed was observed - Adult monarch observed resting on a patch of brown eyed Susan. |
|
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| 6/22/2026
| Boulder
| CO
| Monarchs
| Showy Milkweed | I found one single egg. |
|
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| 6/16/2026
| Oakland
| CA
| Monarchs
| Showy | Observed a monarch caterpillar on the West side of Lake Merritt near Grand Ave in Oakland, CA. |
|
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| 6/15/2026
| Grand Rapids
| MI
| Other
| Common milkweed, butterfly weed | Observed 1 adult female flying amongst flowering common milkweed. |
|
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| 6/12/2026
| Oak Ridge
| TN
| Monarchs
| I recently observed three (3) monarch 2nd instar caterpillars on Tuberosa in a pot in my yard in East Tennessee (within the city of Oak Ridge). I have constructed a screen structure for outdoor rearing. I have a good amount of Tunerosa and Common milkweed and there are plenty of wild milkweeds of both types in an emergency. | These appeared in my yard. I am rearing them on live plants in a screen enclosure outdoors. Sort of a science project. |
|
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| 6/10/2026
| Saint Paul
| MN
| Monarchs
| Swamp milkweed | Three very active larvae chomping away in my front yard. Haven’t seen other eggs on the plant. This is the first year the swamp milkweed has taken off in this spot. |
|
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| 6/7/2026
| WHITE BEAR TOWNSHIP
| MN
| Monarchs
| Swamp Milkweed | I would like to send a picture of a first or second instar caterpillar with a parasitic eruption from it's body that was observed today. |
|
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| 6/5/2026
| Rockton
| WI
| Monarchs
| Common | Was out in the field planting milkweed and saw one egg on a milkweed plant on the path to field. First of the year. |
|
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| 6/4/2026
| Allendale
| MI
| Monarchs
| A. syriaca | There is a perimeter of mixed species along the roundabout in my neighborhood, and I have been checking the common milkweed several times a week. I had previously observed eggs here, and now they seem to have hatched! On one common milkweed there was a 4th instar, and on a different common milkweed there was a 2nd instar. The HOA does mow the area closest to the road, but they (so far) are leaving the plants intact. |
|
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| 6/1/2026
| Simcoe
| ON
| Monarchs
| Common milkweed | Collected for Project 3 |
|
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| 5/31/2026
| FARGO
| ND
| Monarchs
| Common milkweed | One egg and three first instars were observed. Each observation was on a separate common milkweed plant. |
|
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| 6/1/2026
| Simcoe
| ON
| Monarchs
| Common milkweed | Collected for Project 3. |
|
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| 5/27/2026
| Grand Rapids
| MI
| Other
| Common Milkweed | Observed 1 adult female flying amongst the prairie strip along the soccer field. |
|
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| 10/27/2025
| Fischer
| TX
| Monarchs
| | Saw at least 12 adult Monarchs! They were feeding on nectar from various plants: Maximilian Sunflower, Frostweed, Plateau/Toothleaf Goldeneye, Drummond's Aster, Shrubby Boneset, Blue Mistflower, and more. |
|
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| 10/6/2025
| Medford
| WI
| Monarchs
| None | At 4:30 pm with temp in mid 70s and 20 mph south wind, 2 adult female Monarchs, one adult male and 2 undetermined adults nectaring on Zinnia. |
|
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| 10/5/2025
| Lebanon
| IL
| Monarchs
| Common Milkweed (Asclepias syriaca) | This location is an abandoned former Trailor Park, that has since become rewilded. It is located at the intersection of Rieder Road and Highway 50, just West of Lebanon, IL.
This time of year, the site is dominated by Tall Goldenrod (Solidago altissima) and Hairy Oilfield Aster, various thistles, etc., along with some Chicory (Cichorium intybus) around the perimeter. I went to collect some Goldenrod and noticed several (between 6 and 9) adult Monarchs flying about the area. I noticed one in particular, that seemed to be feeding on one of the Chicory flowers. |
|
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| 10/6/2025
| Medford
| WI
| Monarchs
| None | From 11:30 am until 3 pm, with temp in low 80s and SSW wind at 20mph, 2 adult female Monarchs and 2 undetermined adults nectaring on Zinnia and 3 undetermined adults nectaring on New England aster. |
|
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| 10/3/2025
| Medford
| WI
| Monarchs
| None | At mid afternoon with temp in low 80s and wind WSW at approximately 10 mph, 2 adult males, 3 adult females and 6 undetermined adults nectaring approximately equally split between New England aster and Zinnia. One undetermined adult departed flying SE. |
|
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| 10/2/2025
| Medford
| WI
| Monarchs
| None | With temp in low 70s, adult female nectaring on Marigold at bout noon departed heading WSW. Another adult 80% certain was female nectared for several minutes on clump of Zinnia and continued to do so as I left. Nectar may be in short supply, as there's been no significant rainfall for approximately 10 days. At approximately 4:45 pm. with temp in upper 70s, 2 undetermined adults, now in partial shade, observed nectaring on same Zinnia clump. |
|
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| 10/3/2025
| Medford
| WI
| Monarchs
| None | At 6:10 pm with temp in mid 70s, an undetermined adult nectaring in partial shade on the same Zinnia clump as those earlier in the day. At 6:15 pm, single undetermined adult nectaring on New England aster in full shade. |
|
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| 10/1/2025
| Wilmington
| DE
| Monarchs
| | An adult monarch was sighted on a young maple tree. |
|
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| 10/1/2025
| Medford
| WI
| Monarchs
| None | Undetermined adult nectaring on Zinnia with temp in upper 70s. |
|
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| 9/29/2025
| Medford
| WI
| Monarchs
| None | Two adults, one female, the other undetermined, nectaring on Zinnia in a flower garden during late afternoon. |
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| 9/27/2025
| Medford
| WI
| Monarchs
| None | Dead adult male beside sidewalk with wings folded above and no signs of disease or injury. No pesticide application ever noted at this flower garden site during years of frequent observation. |
|
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| 9/24/2025
| Medfdord
| WI
| Monarchs
| None | Adult female nectaring on hardy Chrysanthemum. Temp about 70 degrees F. |
|
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| 10/5/2025
| Belleville
| IL
| Monarchs
| Common Milkweed (Asclepas syriaca) | At the time of this observation, the location was not yet listed as a survey site. I was just thinking about doing it next year. But when I observed two advanced instar monarch caterpillars on one tired looking milkweed plant, I decided to do a full sight survey for practice. I came back the next day and collected one of the caterpillars to try my hand at raising it. That one was released as an adult today 10/5/2025 This evening I entered the location as a survey site, and plan to survey this location again next year. |
|
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| 10/3/2025
| Medford
| WI
| Monarchs
| None | Adult female Monarch nectaring on hardy Chrysanthemum. Temp about 70 degrees F. |
|
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| 9/22/2025
| Medford
| WI
| Monarchs
| | Sex undetermined nectaring on New England aster in flower garden. |
|
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| 9/19/2025
| Medford
| WI
| Monarchs
| None | Two adults, one male, one undetermined, feeding at flower garden during mid afternoon at lat/long above. |
|
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| 9/16/2025
| Lebanon
| IL
| Monarchs
| Common Milkweed (Asclepias syriaca) | This area was Pasture Land for many years. More recently it has been mowed for Hay production, but for the last two years it has become so overrun with Horsenettle (Solanum dimidiatum) that it was no longer considered useful for feed Hay, and has just been only mowed just one time each summer. It was last mowed in mid July. I have been wandering around in this field and observing Monarch Larva off and on throughout this summer. |
|
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| 9/18/2025
| GRANITE QUARRY
| NC
| Monarchs
| MEXICAN ASCLEPIAS | NO DETAILS BEYOND ABOVE |
|
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| 9/8/2025
| Arvada
| CO
| Monarchs
| | 1 monarch on my Joe Pye Weed |
|
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| 9/6/2025
| Orange
| CA
| Monarchs
| Califnornia Native | Hello!
Just wanted to chime in that my Monarch Waystation picked up some activity this month in my own little backyard. I have 10 pupae and 2 5th Instars, some tachnid fly casualties but otherwise these are the only caterpillars I've received from this stray female.
Hopefully they turn into monarchs within the next two weeks! |
|
View
| 9/4/2025
| San Diego
| CA
| Monarchs
| Tropical Milkweed | Initially discovered 4 eggs on this plant which is a new growth after being cut back about a month ago. 3 were observed as 1st instars. 2 in 2nd instar. This lone surviving 5th instar monarch caterpillar was observed returning from leaf litter to feed around 5pm for a couple minutes before walking back into the leaf litter and climbing onto a twig about 6inches away from the milkweed plant. He/she has been motionless on the twig for 1.5 hours, and increasingly limp with droopy antennas. |
|
View
| 9/4/2025
| San Diego
| CA
| Monarchs
| Tropical Milkweed | Initially discovered 4 eggs on this plant which is a new growth after being cut back about a month ago. 3 were observed as 1st instars. 2 in 2nd instar. This lone surviving 5th instar monarch caterpillar was observed returning from leaf litter to feed around 5pm for a couple minutes before walking back into the leaf litter and climbing onto a twig about 6inches away from the milkweed plant. He/she has been motionless on the twig for 1.5 hours, and increasingly limp with droopy antennas. |
|
View
| 9/3/2025
| GRANITE QUARRY
| NC
| Monarchs
| MEXICAN ASCLEPIAS | ABOUT 1/2 HAVE STARTED TO SEARCH FOR PUPATE SITES |
|
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| 8/28/2025
| Wilmington, DE
| DE
| Monarchs
| Asclepias incarnata | We were performing maintenance in our pollinator garden, which is not included in our MLMP site borders, but will be next year. Swamp milkweed was examined out of curiosity with successful results! One 3rd instar was found on a tree sprout that had popped up next to the milkweed so we transferred it back over. The plants weren't thoroughly checked so eggs and 1st instars could have been present also. |
|
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| 8/26/2025
| Blowing Rock
| NC
| Monarchs
| Swamp milkweed | One pupa is beginning to lose its green. The remaining three are still green pupa. |
|
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| 8/25/2025
| Dalton
| GA
| Monarchs
| Swamp milkweed | First observed caterpillars this morning on the swamp milkweed in my backyard garden. They were actively feeding. I will continue monitoring. Please call, text, or email if you would like photos. |
|
View
| 8/26/2025
| Muskegon
| MI
| Monarchs
| common milkweed | I saw 2 caterpillars on my property in my monarch way station. This is my second year of my way stations life. |
|
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| 9/8/2025
| Arvada
| CO
| Monarchs
| | 2 monarchs, on my native sunflowers and my red Jupiter's beard |
|
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| 9/8/2025
| Arvada
| CO
| Monarchs
| | One, on my native sunflowers |
|
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| 8/14/2025
| Madison
| VA
| Monarchs
| A. syriaca | Saw 2 monarchs nectaring on different plants and one female ovipositing. |