Raising Book Resources
Raising Hope for the 2021 Monarch Migration- 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 2021 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 2021 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 guide digital guide with free updates (before each monarch season begins in spring) 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:
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 2021 Results
I released 15 healthy monarchs (14 females and 1 male) from July 29th to August 16th with a 100% survival rate. I am fairly certain all of these butterflies were parents to the migration generation.
The seven monarchs we raised after that, were counted as our official Raise The Migration monarchs for 2021...
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 two years ago when I forgot to close a cage door and found a caterpillar crawling on top of the cage. 🐛 😱
Unexplained Caterpillar Deaths
We didn't have any unexplained monarch deaths in 2021.
Caterpillar Diseases and Parasites?
I'm happy to report no disease issues in 2021. All of our raise the migration participants were brought in as eggs so no issues with tachinid flies...a couple eggs were parasitized by trichogramma wasps, and we discarded those eggs when they darkened and never hatched.
Accidental Deaths?
We experienced one accidental (and completely preventable) accidental death. See the Butterfly Eclosure section below for more details...
Chrysalis Problems
No chrysalis issues to report in 2021...
Community member Jude R. recently used the microfiber method to rehang one of her fallen chrysalides:
Jude reports: There was zero silk and I wasn't sure what to do. Your tip worked and just in time. I was a little worried the bfly's feet would get stuck in the microfiber, but it had zero problems.
Butterfly Eclosures
We had one eclosure disaster this year. An early morning butterfly (emerged from chrysalis before 7am) fell from our kitchen overhang on to the floor.
She lost a lot of fluids from her abdomen when this happened. Her wings recovered 'somewhat' when I hung her from inside a mesh cage, but she was injured badly from the fall on to the wood floor, which is about a 7 foot drop.
Starting in 2022, we will no longer rehang chrysalides on our overhang. It's much safer to rehang them inside the cage where they can crawl up a mesh wall after falling a much shorter distance.
Final Results
Our totals are from all eggs that have successfully hatched. We don't count eggs that were parasitized outside or monarchs brought in as caterpillars because they could have parasites too.
Seven monarch butterflies emerged from their chrysalides between August 29th and October 5th:
1 accidental death (butterfly fall)
0 disease or parasite issues
0 unexplained deaths
4 healthy males
2 healthy females
86% survival rate
Lessons Learned?
Chrysalides should always be kept in a cage or somewhere where the butterfly has a chance to climb to safety if it falls after it emerges. In my experience butterflies rarely fall, but it can happen.
Migration Memory 2021
I came across these mating monarchs in our Minnesota garden on September 19th when it was an unseasonable 90°:
Before 2021, I had never seen mating past the first week of September in our region.
I hope you enjoyed reading about my Raise The Migration '21 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 below by letting 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 2021
338 comments
Last year, I raised 19 and was happy. I added 8 more nectar-rich plants and raised 83 males and 96 female Monarchs this year. I only lost 2 chrysalises so everything went very well this year. I caught, tagged, and released 5 wild butterflies in my yard, so altogether, I tagged 117 monarchs. The 2 most popular plants were Mexican sunflowers and Butterfly bush. Hamilton, Ontario.
After a disappointing 2020, 2021 has been the best year ever. I have had over 100 caterpillars this year, most obtained as eggs on my common milkweed plants. I have 15 chrysalises presently, all looking green and healthy. I ordered 50 tags from monarchwatch.org which I am putting on the butterflies I am releasing this month (September). A banner year here in central NH!
I was hoping to release 200 Monarchs this season but only released 183 in the end, with the last 3 being released on Thurs, Sept. 23. I felt the Monarchs arrived early this year in our area of PA compared to the last 3 years….late June and I collected eggs and raised them from the egg stage. As the season went on, I did find a few cats who survived on my MW and brought them in and put on the MW cuttings in the big cage. In the early part of the season, I released over 160 healthy butterflies but towards the end I had one chrysalis that had “black death” and 3 butterflies that were crippled after emerging from their chrysalis and 3 that were sick….fell from the chrysalis after emerging and could not climb to the top mesh cage … had no strength. In the end, I released 183 Monarchs….92 females and 91 males! Not the 200 I hoped for but will aim for 200+ next Season. I never had so many cats form their chrysalis under leaves on the MW cuttings or on stems or under the top part of the water vial rack! I am wondering if maybe I had too many cats in the cage at one time, although there was more than sufficient MW and room in the cage. I think I will invest in a second cage just to be sure there is more than ample room. I have one large cage at present and a baby cage. Hoping all my butterflies make the migration successfully!
I live in southwestern Ohio. We did not have very many monarchs this year and did not find any eggs or cats on our plants. Our milkweed did not look good this year. The leaves turned dark pretty early . I read the could be a fungus problem and sprayed this with H2O2/water combo but apparently was too late. Found some eggs and cats at our farm 30 minutes north of our home. Only one eggs hatched, had one chrysalis turn black . Only had a total of about 10 emerge healthy, 2 females ,rest males. We basically had all our milkweed in one place and next year will try planting in variety of spots so all won’t get diseased.
From Niagara Falls Canada.
My third year raising monarchs. Raised 41 from egg all but 2 of which survived to adults.
I am blessed with a huge milkweed patch right behind my house in a Hydro corridor which I stake out to prevent them cutting it.
We don’t usually see Monarchs up here until late June, then the few that arrive are prolific!