There are lots of ideas here:
You can sprinkle garlic powder around them. Deer don't like garlic.
Try shredding Irish Spring bar soap or human hair spread around.
I use a spray deterrent I purchased at home Depot for deer
There are some good deer repellent tips in this article.
A friend of mine said deer hate sage, maybe plant sage among the Hostas, or at least sprinkle the herb on the Hostas.
Is your yard fenced? A tomato cage with chicken mesh may work. Or you could try discouraging them with a repellent made for deer (most I have seen were a predator scent). Good luck and stay safe!
Try using a device called the Scarecrow. It attaches to your hose and is motion-activated. They are available on Amazon.
Hi Char, hope this information helps you with your hosta eating deer. Search Results
Go all-natural! Certain seasonings and essential oils are known to keep deer away from your hostas without being harmful. Garlic powder and cayenne powder can be powerful deterrents, and oils such as lavender, cinnamon, and cloves, or anything strong smelling, will often keep deer away as well. Get a pet!Feb 5, 2018
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Hi Char. I live next to woods and 2 blocks from the DuPage River. So we see a lot of wildlife. The animals were treating my vegetable garden like a buffet. The only thing that worked for me was using shredded bars of Irish Spring soap. You can shred them on a box grater or even in a food processor. I buy the 12-bar pack of soap and shred it all at one time. I store it in a 5-gallon bucket with lid out in my shed. As soon as I plant everything, I spread out the shredded soap around each plant and around the perimeter of my garden. I still see a few bites on some of my plants, but much less than it used to be. I'm sure the soap will keep the deer out of your Hostas too. Good luck Char.
we use a spray every other night called liquid fence. Works great...beware it stinks.
I've read many times that deer do not like the sccent o mint and many people have shredded the bar soap "Irish Spring" and added to their gardens to keep the deer away. It has to be replaced every so often because of rain and the leements, but worth a try!
Hello Char, hope this helps you out,
Thank you all for this information. Very helpful.
Hi Char: You can make a mixture of 16 oz of water and a bottle of Oil of Clove or Clove Oil, same thing, in a spray bottle. Mix it well and spray it around your plants. It smells nice, but tastes horrible. It's non-toxic, so it won't hurt anything or any one, unless you put it in your' pets mouth. It's toxic if they eat it, but if they smell it, they won't be hurt. You can buy the oil at any candy making store or your local grocery store may carry it. It comes in a bottle about 2 inches tall and only costs a couple of bucks. Once the pet tastes it, they will give the area a wide berth when they smell it! Don't put it on your pet or in their mouths, it's toxic to them if they get more than a little lick. Good luck!
Pee on them. Human urine scares deer off.