It's that time of year again, when the kids (and myself) get overly invested in the lifecycle of these grubs. Last year we managed maybe a 10% success rate (from egg to butterfly) hopefully we'll do better this time round.

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[–] Mojojojo1993@lemmy.world 5 points 9 months ago (2 children)

I had about 5 swan plants.

I get why the rate of decline in monarchs.

They would eat a plant to destruction them move on to the next one. I lost hundreds of caterpillars. Still have some cocoons that didn't survive from last year.

They really need to come up with a better plan. Also doesn't help that swam plants are poisonous to a bunch of other animals. So can't plant them anywhere near where other animals are.

[–] invalidname@lemmy.world 3 points 9 months ago (1 children)

Also, wasps eat the caterpillars and if they find the plant, will keep coming back till they’re all gone!

[–] Mojojojo1993@lemmy.world 2 points 9 months ago

Ah so they. We have millions of wasps.

[–] liv@lemmy.nz 2 points 9 months ago (1 children)

They also eat moth vine so you can switch them to that.

The really big ones (after their moults) can finish off with pumpkin peelings!

You can plant South American Milkweed instead of swan plants, butterflies lay on that.

Giant Swanplants are bigger and hardier as well.

[–] Mojojojo1993@lemmy.world 2 points 9 months ago (1 children)

Where do I get moth vine and giant swan ?.

[–] liv@lemmy.nz 1 points 9 months ago* (last edited 9 months ago) (1 children)

Giant Swan is found for sale, maybe the Moths and Butterfly Trust on Trademe is selling it?

Moth vine is a common pest plant, there's probably some in any suburban area your council can't reach with spray.

[–] Mojojojo1993@lemmy.world 2 points 9 months ago

Looks like giant swan is what I normally use. I don't live anywhere near suburban. But I'll be on the look out. Sounds like it dies off in the cold