Raising Monarchs at Home

Here are some basics. I’ll add photos and more information soon.  There almost as many good ways of raising monarchs at home as there are people doing it!  So improvise.

The basics are:

• The container needs to be tall enough that a butterfly can emerge from its chrysalis and hang with its wings fully extended to dry and harden.
• You must always provide fresh milkweed for caterpillars.
• You have to control moisture.
  Early instar caterpillars can drown in a drop of water and too much moisture can support both fungus and  bacterial growth that can be bad for the caterpillars.  If it is too dry the milkweed dries out quickly and the caterpillars don’t get enough water in their diet.
• You have to keep the enclosure clean.
  Frass must be cleaned out regularly.  It also is a source for mold and bacterial growth. As the caterpillars get bigger there will be more and more frass.
• Your container must keep out predators and parasites.
  Fine mesh is necessary to keep out  the tiny wasps (At first glance they look like fruit flies or gnats) that can parasitize caterpillars as they transform into chrysalides. Tachinid flies that look just like houseflies lay eggs on caterpillars.  When the maggots hatch they burrow into the caterpillar and eat it from the inside out.

This is what I do:

Lots of different containers work.  For eggs I like small plastic storage containers, because it is easier to see what’s going on and control humidity, which is a lot of what you have to accomplish. I raise a lot of caterpillars most summers and am partial to plastic shoe boxes for the older guys.  If you want to display your caterpillars, aquariums, jars, bug/hamster boxes, and all sorts of other things work.

I collect eggs because it is easy to protect the caterpillars from parasites if you have control of them from the time they hatch.  Parasites emerging from older caterpillars can infect the rest of the stock with which they share a container.

Common milkweed (Asclepias syriaca) is the dominant milkweed on the east coast into the Midwest.  Those leaves are usually large enough that you can just pluck the leaf that the egg is on.  I put them in a closed container with bounty paper towel on the bottom and check them regularly.

The egg will hatch within 4 days of when it was laid in weather averaging 75°, faster if it is warmer.  If the leaf dries out before the egg hatches, snip the part with the egg off of the old leaf with a pair of scissors and place it on a new fresh leaf. (1/4″ square is big enough and won’t tend to dry out and wrap around the egg.  Sometimes newly hatched guys get confused and sit in an old dried up leaf when there is good milkweed all around them.)

Make sure you regularly give your little caterpillar fresh leaves.

Once caterpillars make it to 3rd instar (and that is somewhat arbitrary, based on what I can spot and take care of easily) I move them to a larger container.

It is easier to keep leaves fresh in a larger container. Cut stems of milkweed about 4 -6 leaves long (or whatever fits your container) and wrap the bottom in a paper towel. Dip the paper towel and stem in water and collect as much as it will hold then stick it in a baggie, wrap the excess baggie tightly around the stem and secure it with a rubber band–I like the folded sandwich baggies they are easy to work with. I’ve also used twist ties, but rubberbands hold on better. I’ve also used florist tubes for water but they tend to go dry too fast for my liking. The paper towel and baggie method was what I started with and after a couple of years of using the supposedly “new and improved” florist tube method I went back.

From that point on I just keep replacing the milkweed and cleaning out the frass once or twice a day.  It is best if the top of the container is a good place for the caterpillar to go into j and make its chrysalis because most of them will go to the top for that.

The Moisture Problem. 
If you use a container cover that air flows through (I really like to use cut up stockings for lids–the top part of panty hose with the legs knotted and cut off for bigger containers) and you have air conditioning the leaves could dry out.  In that case I keep the paper towel on the bottom of the container slightly damp. If you have a solid lid container that no air goes through moisture could collect…in that case I use a dry bounty [a[er towel on the bottom and keep an eye on the container and wipe it dry, when necessary— at least once a day.

My favorite covering for plastic containers is panty hose…seems to keep the moisture level perfect.  I use the legs, cut in sections and knotted for small containers and for bigger containers I use the seat with both legs cut off and knotted.  The elastic in the hose holds the material in place and if you use sheer it’s easy to check out if anyone is in “j” on the inside before you remove the lid.  It just isn’t quite as “pretty” for show…but it is the rule of the day at my house.

If you don’t use pantyhose and are just buying them for lids, the cheapest brands are the best.  When I am doing classes and have a lot of pint size containers  for different instar caterpillars, I buy a box of cheap knee highs. I like the black ones best.  They are easier to see through for some reason.

For a show  use an aquarium or bug box.  You can also use a plastic container, cut out an area on the plastic lid and hot glue screening material over the hole.

If you are having trouble with disease or you want to be particularly careful, putting just one caterpillar in a container creates a firewall and protects the caterpillars from infecting each other.

If the caterpillars all seem pretty healthy, I will put 4 in a medium sized container (like a bug box) and up to ten in a larger container.  It is important that all of the caterpillars in the container are about the same instar (size) and make sure there is always plenty of food…so they don’t munch on each other.  You have to keep it clean which becomes more of an issue as they get bigger.  They eat more and the frass gets bigger too!

You need to be able to sterilize your containers. Clean with a mild bleach solution and rinse well.

Don’t allow butterflies to eclose in the same container with younger caterpillars. A major monarch parasite is a protozoan parasite which can only live in the caterpillar stage of the monarch. When the caterpillars become chrysalides the protozoan become spores which migrate to the areas that will become scales on the butterflies.  A newly emerged butterfly that was infected by the Oe protozoan can drop spores onto the milkweed that caterpillars are eating.  If the caterpillars ingest the spores they will be infected.  If they ingest a lot of spores the infestation can kill them.

Chasing Monarch Eggs

Looking into the valley from the Knobs

This year the monarchs came early to the Knobs of West Virginia.  Usually I see a few eggs in May.  The butterflies are likely the offspring of the Mexican migrants hatched from eggs laid in the southern tier of states. The migration north is still a strong pull for the monarchs at that point and I almost never see the butterfly that leaves the eggs. She and all the other monarchs are just passing through as they head north in a drive that repopulates the summer breeding grounds each year all the way up into Canada by around the end of June. But the inflow of monarchs usually continues and by mid-June eggs start showing up in my usual tromping grounds with more regularity.  By the last week of June, I am chasing eggs in earnest in order to be ready for my summer classes and programs. (Well that’s what I tell folks. Truth is I’m addicted–let’s call it devoted.  I’d be out there hunting for them if I were the only person around and nobody else cared!)

1st instar caterpillar

4th instar monarch caterpillar.

This year on April 30th I spotted a faded, tattered female monarch laying eggs on the tiny starts of milkweed poking through the ground at the switchback on Raines Road. Her fluttering stop and move, stop and move behavior was obvious egg-laying behavior and when I checked the plants I discovered that she had laid 30 or more eggs on a small cluster of 4 inch high milkweed ramets.  I collected those eggs and others that I found over the next week or so until I had around 75. I told myself several years ago that I wouldn’t start this egg collecting until the end of June, but this was an emergency.  So many eggs loaded on the tiny starts of milkweed ramets would produce more caterpillars than those plants could feed.  I was rescuing monarchs.

Monarchs arrived early a lot of places this year.  It was hotter and drier than usual in the south this year and strong winds and storms helped to carry the migrants out of Mexico much farther north than normal.  Scientists are concerned that these conditions will produce a poor or at best average summer populations.  I was concerned that the early push north might reduce the numbers of monarchs filtering into my area in June when the population that provides the caterpillars and butterflies for my summer programs is usually building.

Monarchs mating in my tent

I raised over fifty monarchs (and gave away around 25)—offspring of those first eggs—that eclosed between June 9^th and 12^th,  just in time to help me celebrate my 60^th birthday.  That week it was hot in West Virginia, getting into the 90s nearly everyday.  I kept them in a screen tent long enough to become sexually mature and start laying eggs, then released them to join the rest of the clan in the continuing northerly migration.  I wanted them to leave a few eggs on the Knobs on their way out.  They left around 100 eggs in my tent and at this point I have about 75 caterpillars.

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Monarch egg on the underside of a milkweed leaf

I’ve been checking the milkweed daily for eggs, and except for a few eggs a couple of weeks ago, probably left by the monarchs I raised, I hadn’t found anything until today.  Today I found 3 eggs about 3 miles apart.  So hopefully we’re on for the season.  A little later than usual, but it’s an unusual year, and I have those 75 caterpillars and the screen tent to boost numbers for my monarch programs.  The milkweed is blooming and lush. We’re ready.

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Common milkweed ready for egg laying monarchs!

I haven’t spotted the monarchs leaving the eggs since the one I saw in April. I always wonder what her trajectory is.  This area is wooded with common milkweed (Asclepias syriaca) growing in the sunny edges of roads and large agricultural or overgrown fields. My search sticks to roads and paths but the monarchs have no such restrictions.  They can fly up out of the valley and come down in open areas bouncing from field to field or follow the open areas along the roads.

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Tussock moth egg cluster

I also noticed tussock moth caterpillar eggs for the first time today.  Monarchs normally lay solitary eggs, but the tussock moth caterpillar lays a large cluster of eggs covered with fuzz.

Tussock moth egg cluster opened

These voracious, competing consumers (a species that eats milkweed like the monarchs) stick together as young caterpillars and can completely strip a milkweed plant.

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This predator is eating a milkweed leaf beetle larva

There are lots of predators out there in the milkweed as well.  It will be an interesting season.

A spider setting up shop in the milkweed.

Back in the Milkweed Patch.

Monarchs arrived early this year on the Knobs, in southeastern West Virginia. I spotted a tattered, faded monarch—likely a Mexican migrant— on April 30.  Between those she left and those I found checking out milkweed on other spots on the Knobs, I found over 75 eggs.  The weather shifted between unusually hot days, 90° or more to cold wet days.

Monarchs Mating in My Screen Tent

The caterpillars grew a little slower than summer

monarchs generally do.  Most of the chrysalides eclosed June 9th, 10th and 11th, giving me a wonderful gift for my 60th birthday.  I kept them in a screen tent in the yard for a few days so that they would mate and be ready to lay eggs as they continued their northward migration.  I wanted a few eggs to be left on the Knobs.

Once most of the butterflies had mated, I released them to continue their migration north.  They left me around 100 eggs in the tent which I am currently raising.

The screen tent was opened to release the monarchs on June 15th

Ba talks a lot! (about monarchs)

It’s winter in the milkweed patch in my backyard on the Knobs of West Virginia.

Winter Milkweed photo by Ba Rea

Just had the pleasure of doing a radio talk show, Birds and Nature, with Scott Shalaway about monarchs, monarch books, monarch programs, this trip and more.  I had a good time… hope I got everyone credited appropriately …talking live and then hearing back what you say is a daunting experience.  Saying things well and accurately extemporaneously is a skill I’ll have to work on!  (I’m definitely steering clear of politics)  I can’t figure out how to put the connection into the blog but if you go to this site:

http://www.talkshoe.com/talkshoe/web/talkCast.jsp?masterId=1028&cmd=tc

it is:   Episode 110 Birds and Nature 11/23/2008 12:02 PM EST  (2:05:28)

I talked with him in the second hour.  Amongst many other things, Scott asked me about how I got started as a “monarch obsessed adult”  and it brought back great memories from the early 70s.  I took a picture of this jacket I embroidered for myself in 1973.  I wore it all the time back then with no clue that anyone else was watching monarchs or how deep the impression was they had made on my life’s path.  I’ve been following monarchs all of my adult life:

 

My Jacket

 

 

North Central Mexico

I am reviewing notes and memories from our trip to Mexico. I’ve been talking with Carol Cullar one of my traveling partners and the director of the Rio Bravo Nature Center. She sent this lovely description of the ecosystem and geograpy of north central Mexico

Report from Carol Cullar:

Limestone upthrusts photo Carol Cullar

North Central Mexico is characterized by upthrust limestone mountains. On the east, runs the Sierra Madre Oriental (Eastern Mother Range) and on the west the Sierra Madre Occidental (Western Mother Range.) Between those two ranges is a high desert plain called the Altiplano (High/Flat).This rain shadow region is shared by two deserts, the Chihuahua (does the dog come from here?) to the east and the Sonora (Big Noisy) to the far west.

Rain Shadow photo by Carol Cullar

A desert is defined as a region receiving less than 11″ of rainfall a year. Little rainfall and poor soil are two of the factors controlling what plants are able to thrive and grow in this region. There are more species and varieties of cactus growing in the Chihuahua Desert than anywhere else on earth. They have adapted to its harsh conditions by developing small leaves, deep roots, and stems that store water for the dry times. Plant-eating predators are kept away by fierce thorns, but still, some insects have found a way to get past this barrier.

Prickly Pear photo by Carol Cullar

This prickly pear leaf is occupied by the cocchineal insect.

Despite its rain shadow, moderately high elevation, desert status, and low humidity, many nights in the desert are quite cool. Plants retain some warmth from the sun, causing dew to form each morning. This scant moisture is sufficient for the many species of lizards, desert rats, and other animals to find water for life.

Century Plant Dew photo by Carol Cullar

Chihuahua Desert Vegetation photo by Carol Cullar

Plants like the Joshua tree, cholla cactus, and allthorn grow slowly; and some, like the cresote, can live for thousands of years.

Monarchs migrate through moist valleys. photo by Carol Cullar

Monarchs migrate through the Altiplano, but recent investigations have found that they prefer to make their way down through the Sierra Madre canyons and valleys where rich vegetation and a summer rainy season produces vast numbers of flowering plants.

The End of the Road

I am home again in Union, West Virginia.  Our trip to Mexico with the monarchs was a wonderful experience. My apologies that the photos and text got thin near the end.  The nice tech at Apple told me very gently that there is little that can be done for my fried hard drive, but since I had an Applecare contract that it will be replaced.  For $500 to $2700 I could attempt to retrieve a few photos…no guarantees.  I don’t think that makes sense.  I have our notes and photos from the last few days. Carol and I will work together to get some  updates posted on what we found. I am putting together a map and we will post as soon as we have it filled out.

Hello from Laurel, Mississippi

We arrived at Carole Jordan’s home late last night. We are enjoying a much needed rest from the road today amongst great friends.  Tomorrow we will get up early and drive to Radford, Virginia.  I should be home sometime Sunday and back to my email and phone connections.

This has been a wonderful trip.  We have seen much, met great folks, and endured cramped space, long hours and differences of schedule and opinion with great grace.  Many thanks to Carol Cullar for her advice, knowledge, translation and friendship and to Bill and Susie Fry for friendship and a great sense of humor!

It is likely, that I have lost all but my last two days of photos as my computer now does nothing but flash a file folder with a question mark and I had been downloading and storing everything on it…However Bill and Susie and Carol have offered to send me copies of their photos and I am looking forward to posting and reviewing our monarch (and other) adventures over the next few months and introducing everyone to the return of the monarchs to the Knobs over Union, WV in the Spring.  Please join me!

Ba Rea

Hello from Matehuala Mexico

I have so much to share.  We went back to the area below the El Rosario parking lot on Sunday morning and watched thousands of monarchs drifting down from their over night clusters…There were few up in Angangueo and we didn{t bother to go all the wy up to the parking lot at El Rosaio. It was an awesome sight.  We saw migrating monarchs in several areas on our way north.  They seem to be still streaming down toward the reserves. I have a few pictures, but nothing that would give you the full effect. 

 Unfortunately my computer has gone on the fritz and I am writing this from the hotel lobby on a computer with a keyboard that is set up for Spanish and not too efficient for me!  I can’t upload any of my pictures and what I write is regularly disappearing! It will take us until sometime on the, Saturday or Sunday, to get home…to a computer that works and I will post the end of the trip then.  We are all well and looking forward to getting home.

Monarchs Clustering at Lower Elevations

Around 2 pm we headed up to Angangueo.  We began seeing monarchs in Ocampo.  We saw them further up the road toward Angangeo than we did yesterday but still very few in Angangueo.  We continued on up to La Chincua.  There were scattered dark clouds around the mountain tops again and we saw no monarchs above Angangueo.

 

Over dinner at Los Arcos (the Rainbows) Restaurant on the square in Angangueo we decided to go visit the pyramids at San Felipe los Alzati. On our way up the road to the pyramids we spotted many monarchs.  As we passed one tree hundreds shot out into the air.  We stopped and watched them form several clusters.  A little further up the road there was another tree with many clusters.  Carol Cullar estimates that the first tree had between 800 and a thousand clustered monarchs. Her great new camera captured much clearer pictures than mine did and she will post them when she gets back to Texas.

Hello from Michoachan!

We finally found an internet connection!

Bill Fry at the Pyramid of the Sun

Tuesday we visited Teotihuacan, City of the Gods.  Our visit was just a very brief brush with this huge, complex archeological site.  It was election day in the US and we were planning to be in Tuxpan at Quinta Mitzi to watch the election returns that night. We climbed the Pyramid of the Sun, surveyed our surrounds and moved on.  A true explore of Teotihuacan will have to wait for another day.

Bill and Susie Fry on the Pyramid of the Sun

Quinta Mitzi

After many missed turns, detours and topes we arrived in Tuxpan around 5 pm.  We began seeing monarchs again as we entered Michoacan.   Quinta Mitzi and Mitzi and Ranulpho de Mancilla are  a familiar and delightful Mexico stop.

Number 14 where Fred and Norah Urquhart (and Bill and Susie Fry) stayed

This is the hotel that Fred and Nora Urquhart stayed in when they came to see the monarch overwintering sites for the first time. 

Mitzi and Ranulpho

Mitzi was born and raised in Chicago and marred Ranulpho and moved to Mexico in 1949.  Quinta Mitzi has featured in all of my Mexico trips.  The motel is not generally open any more as Mitzi is 87( I think) and Ranulpho is 98, but if you call ahead and arrive before dark it is still one of the best places to stop.  

Amidst the bumpy roads and topes Susie had succumbed to Montezuma’s revenge and we were happy to give her a day to  rest and recuperate watching the beautiful 7 foot tall pointsettas outside her door and drinking Mitzi’s chamomile tea.  Bill and Susie took the room with the fireplace that Fred and Nora Urquhart had  stayed in.. We did a day trip to find Carole Jordan’s casita in Zitacuaro and met her landlady Oreilia and Betty from Biocensis (sp?).  They were extremely helpful getting us set up to move in on Thursday. The casita is small but lovely, one of several around a courtyard off of the street.  

Carol counting thousands of monarchs flying by below El Rosario
–sorry the butterflies didn’t photograph well

Thursday we drove up to the parking lot below El Rosario and then up to Angangeo.  The monarchs are arriving here.  We did not see too many in Angangeo or up in the area near the parking lots at El Rosario but in the forest well below the reserve they swarmed above the trees and were all over Ocampo.  We intend to drive back through Angangeo to La Chincua today.  

Church on the square in Angangeo

The Don Bruno is not open for the season yet