Raising Book Resources
Raising Hope for the 2023 Monarch Migration- Share Your Raise The Migration Results
Raise The Migration is an annual North American challenge to raise monarch butterflies to release for fall’s annual monarch migration. The time has come to share your 2023 experience and raise it forward…
The raising season is coming to an end, so we’d love to hear how many butterflies you released for fall’s annual 2023 monarch migration…and more importantly, what lessons you’ve learned through this amazing raising experience?
If you’ve still got some raising to do, raise on! But please post in the comment box at the bottom of this page after you’ve released your last butterfly.
Every year, I start Raise The Migration in July, but monarchs raised at that time aren’t actually migration generation butterflies…they’re the parents to that amazing generation of travelers.
There’s no way to tell whether butterflies will mate or migrate, but one telltale sign of a migration generation butterfly is its size, which is dependent on how much the caterpillar eats. The first super-sized caterpillars start to form chrysalides around the first week of September in our northern region…
In the garden, you can tell non-migratory butterflies by their worn out wings. Non-migratory males are also more aggressive, chasing off potential competition while seeking out female companionship…migratory monarchs are in sexual diapause and only interested in stocking up on nectar for the long journey ahead.
So how did our Raise The Migration Monarchs fare this season and what lessons did we learn raising forward?
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If you’re interested in a step-by-step how to raise monarchs book (choose paperback or PDF download) please check out the monarch raising guide by clicking this butterfly photo:
For anyone who purchases the guide (or any other item) from Monarch Butterfly Life, you will be invited to our closed facebook group where you can discuss raising monarchs with other raisers and post your photos.
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Here are Raise the Migration results from the past eight seasons:
2022- 100% Survival Rate
2021- 86% Survival Rate
2020- 82% survival rate
2019- 81% survival rate
2018- 93% survival rate
2017- 100% survival rate
2016- 96% survial rate
2015- 96% survival rate
2014- 90% survival rate
2013- 100% survival rate
As you can see from the results, this raising system is consistently producing healthy monarchs to help support the struggling monarch population.
Raise The Migration 2023 Results
Caterpillar Escapes
By keeping monarch eggs and baby caterpillars in sealed food containers, and raising larger caterpillars in the mesh cages, we never lose caterpillars.
I think the closest we have come was a few years back when I forgot to close a cage door and found a caterpillar crawling on top of the cage. 🐛 😱
Unexplained Caterpillar Deaths
None
Caterpillar Diseases and Parasites?
None
Accidental Deaths?
I carelessly removed a small caterpillar that was getting ready to molt inside the plastic food container. It was not able to fully shed its skin and did not survive.
Chrysalis Problems
None
Butterfly Eclosure Issues
None
Final Results
Our totals will be taken from all eggs that have successfully hatched in our care. We don't count eggs that were parasitized outside or monarchs brought in as caterpillars because they could have parasites too.
This year, we ended up with 9 migration generation monarchs...all have been 'unintentional' after pulling wayward egg-upied common milkweed coming up in the lawn.
So how many survived to reach butterhood?
1 accidental death
0 disease or parasite issues
0 unexplained deaths
3 healthy males
5 healthy females
89% survival rate
Lessons Learned
There have been a few lessons learned throughout this season and it's the result of having a new outdoor raising setup.
In past seasons, we raised in a 3-season porch with the windows open, which protected growing monarchs from extreme weather, while still exposing them to environmental cues telling them to migrate. This year, we raised outdoors and barely avoided a couple catastrophes:
- Protect the cage from heavy rains above- we did this by placing the cage on a bench under an evergreen. On the other side of the deck, we place cages under the awning (prevents drownings and falling chrysalides)
- If heavy rain is forecast, consider removing the poo poo platter so rain doesn't pool on the cage floor (prevents drownings)
- Protect monarchs from strong winds- we ended up using two paver bricks in each cage (prevents cages from falling or blowing away)
- Crowded Caterpillars often Pupate on Milkweed Leaves- We used smaller cages this season and having to use two pavers inside each minimized space which made plant leaves too enticing to form chrysalides
- If a caterpillar pupates on a leaf that's OK, but separate it from feeding caterpillars (prevents chrysalis from falling to floor if leaf gets eaten)
- Use your magnifier- our lone accidental death of '23 could have been prevented if I used it to see that a small caterpillar I moved was actually molting. (When you see better, you do better!)
- Keep Cages away from Predators- we have been lucky with insects and larger predators chewing through the cage to this point, but there is always a greater chance you will have issues with an outdoor raising setup
We were very lucky this season was a success. On a windy night, the cage nearly blew off the table it was on becuase I was using rocks instead of the heavier paver bricks to secure the stage. This could have severely injured or killed most of our brood
I much prefer the indoor setup with exposure to natural outdoor conditions. We will be investing in a greenhouse or arboretum for raising purposes next season and will keep you posted.
Migration Memories 2023
Our Mexican sunflowers were a big hit with migrating monarchs, swallowtails, hummingbirds, and bees this season. Here's a Minnesota Migration Moment from early September:
...and here's our final release monarch female stocking up on nectar September 20th:
I hope you enjoyed reading about my Raise The Migration '23 results and lessons learned raising monarchs through the butterfly life cycle .
And now, I'd love to hear about your experience...
Share Your Results?! ✍️
Please share your results at the bottom of this page and let us know how many monarchs you released to help boost the struggling monarch population…remember to include your location.
More importantly, please share the most valuable lesson(s) you learned about raising monarch butterflies, that you believe can help others raising forward.
Thank you for helping to Raise the Migration in 2023
189 comments
Released the last butterfly (number 28) on Sept 29. This last one was the only one I found in my garden as a chrysalis, the rest were raised from eggs found mostly in June. It was interesting to me that just one butterfly had lain 9 eggs on just one milkweed as I watched her flit around the yard.
It’s that time of year in Gallatin, Tennessee (northern Middle Tennessee). Today I released my last monarch butterfly. I have been raising these beautiful butterflies for several years. This year was challenging weather wise! However, it was a successful.
A total of 96 eggs were found
28 baby caterpillars were discovered on the milkweeds.
All were brought inside and placed in plastic food storage containers. Early in the process this year I suspected, some (about 6) were eaten by other cats, therefore I began putting each egg in separate container. Problem solved!! But they do fight as they get older…sibling rivalry!
I did have one chrysalis that turned black within 24 hrs. Eventually it just dried up. Placed in ziplock bag & trashed it. I removed the other cats to a separate cage immediately. Another chrysalis had a sunken in spot, I just let it go thru the process. It only had 1 full wing & the other wing was under developed but not all was lost. Another butterfly had been attacked by a bird & the bird decided he didn’t like the taste & dropped the butterfly. Very sad thing to watch. I took the wing from the dead butterfly & carefully glued the wing on the other. Both were females (didn’t want a confused butterfly). After about 24 hrs she was able to fly so she was released. Crazy idea but it worked. My husband thought I had lost my mind but I had to give my butterfly a chance.
One caterpillar had a skin defect but was beautiful butterfly when all was said & done.
What I learned this year was to separate the rascals for at least a week before putting them in cages. Limit each cage to 6-8 cats.
Floral tubes are great to have until it’s time for them to climb. Then I place the milkweed in bottom of the cages.
This year:
49 males
63 females
My granddaughters ages 5 & 9 are now raising caterpillars. This is their 2nd year. They love it!!!
I forgot to say I live in Strathroy Ontario, Canada. Just west of London:)
Hi! My husband had a lot of health issues this year, so we had to scale down; didn’t start looking for eggs until the end of July. Of course, a few smaller cats came calling, along with our usual suspects. We ended up with 35 successful eclosures. The big surprise was the proportion of females to males – 21 to 14. In the past, even when we had at least 100, it was 50:50!
Released the last 2 monarchs 10/2/2023. Successfully released 30 females, 16 males and 3 unknown because they left before I could ID them. There were quite a few eggs that didn’t hatch and several “cats” that died before going into a chrysalis. Lost 2 monarchs that could not fly and one that was knocked down by another right after it came out of the chrysalis and it died. Not my best year. I did not check for OE but assumed the ones that died might have been exposed. At least no aphids this year until all the “cats” were done eating milkweed. Most were found on native common milkweed and some on the red milkweed I planted last year. The flower favorites for the late butterflies were Mexican sunflower and asters. They had to fight the bees for the asters and goldenrod.