Desert willow and yuccas in a hugel

Can anyone tell me how long I need to let yuccas and desert willows sit in the sun after cutting them down before I can bury them?

I don’t want them to sprout again.

I guess I’ll just put them out with the trash to be thrown in the landfill.

I"m surprised you have them in Indiana!  I'm in West Texas and yuccas are all over the place.  I would imagine at least a month for those, but that's my SENSE and not my DATA.  We've been on our 20 acres for 15 years and have knocked a few over to build various things, and the only ones that resprout are those with roots still in the ground (even under a repeat car wheel in the driveway!)  We do have some dead whole ones above ground that have never sprouted... So I don't have experience of re-burying them yet.  I'm certain, though, that you could remove all the "beard" material and bury that without fear of them sprouting... and there's a lot of that as biomass.  

Thank you for answering.
I need to update my profile. We moved to New Mexico a couple months ago.

I have a small lot with just desert weeds that have seeded here. We are taking out everything and planting fruit trees. The soil is just sand and clay, no worms at all. A neighbor told me I can’t  have a compost pile unless its covered because of rats and roaches so I have been burying kitchen scraps and anything I can to enrich to soil.
It’s all different than what I was used to in Indiana.

desert willows should flower alot and would be good to bring/ keep pollinators around. i think they smell good too

I would compost them as I don't think they will attract rats or roaches. Just find a corner out of the way, put them there and forget about them.

Yes, both yucca and desert willow have blooms that attract pollinators.

The deer love my yucca blooms so much that I never get to enjoy the blooms.  I get to enjoy the deer instead.

I've read that yucca shoots are edible and like large asparagus, though I haven't tried them yet.  I just planted a bunch of varieties of yucca this year so that I can give them a taste.

We live in a very "non-desert" area of Georgia, which ranges from 30-40 inches of rain. We have yuccas.

If you have them and don't want them, I can see why they'd be a hassle...those things are practically unkillable!!! And if you back into one, OUCH!!

What we did to deal with yuccas is that we actually DO want them at the right of way along our front fence. (Security reasons.) So whenever we see one in the back yard, we try to dig it up with all its roots attached. Then we transplant it out front. But we're still finding stray pop-ups in the yard, even 2 years later. So we'll just keep transplanting, I suppose!!

Julie, could you have a compost tumbler? I'd imagine those might do a better job of keeping vermin away.

Howdy!
Considering that I've been told that "Compost draws rats and bugs" by several people in several states (and very different climates), I'm guessing that the person who told you that doesn't understand what a well managed compost pile can do and does not do.

Unless you're in an HOA situation, or there's some other reason why you can't do basic and traditional gardening, including setting up a compost pile, I would suggest giving  the "advice" you were given the same value as what you paid for it.
There are different circumstances in your new home, than you probably had in the different climate, but a quick contact with any local garden supply center, garden club, or state sponsored/funded extension agent will be able to help you through that.
https://bernalilloextension.nmsu.edu/mastercomposter/

Good luck!