I'm moving into my new house in south jersey in a week, i get to do all the gardening wich is something ive always wanted to do. I'm a kind of seclusive guy and i dont think my land loard will let me put up a fence or plant bamboo. so I've decide to try to find plants that are painful to the touch, that i can plant a cure for in the same garden a few feet away. my first thaught was of course singing nettele, but i have only seen the get as tall as my anle. i sopose i could plant a 3 feet deep [eramiter arround my home but i know that would be difficult and expensieve, i undersatand this will end up being costly but i am willing to pay, if yyou have any sugestions please help!
What about Berberis? That is really prickly. Comes in small and tall varieties. Can have green or purple leaves. Has colourful flowers and berries.
You will need to check to see if it grows in your area.
Barbery or berberis does in fact grow in South Jersey. Very well. I grew up there and had a few of them in the yard. Sandy, acid soil of the Pine Barrens.
There are a lot of choices for hostile landscaping, but most of the things you'd need antidotes for would not work especially well. Sure you could have stinging nettle or poison ivy and jewelweed, but all three would die back or go dormant in the case of poison ivy.
Look for native plums that have thorns, too. Most nurseries won't have them, but wild plums can form thickets and some varieties have random thorns. Hawthorn also is spiny and treacherous to sneak through.
For plants like native plums, you'd probably have to contact the local native plant society and see what those people know. Sometimes they'll have digs or rescues you could go on to get some, or you may find someone who says their pasture is full of them.
White pine can also be discouraging to sneak through, because it's so tarry. When it's young, it can be pretty dense and bushy.
Also consider holly. The hollies in NJ are pretty spiny, or you can get cultivars that are even prettier.
Pyracantha is another nursery plant will sharp thorns.
All of these grow in South Jersey.