Do you desire to deflect burglar and nosey neighbor ? And pet and small children ? And possibly all other human beings ? But do you also have a refined aesthetic sense — none of that ugly concrete , please — and a fleeceable quarter round ? No trouble ! These anti - personnel plants are as effective as any moat .

The plant kingdom is full of poisons , thorns , and noxious odors — all of which can be weaponized to keep out unwanted human impinging . The UK ’s Metropolitan Police has offered30 plants to deter thieves , but why hold back there ? Here are some green solutions to keep away burglar and everyone else . Presented in gild from least to most isolating .

Creeping Juniper

Image viaW. Baumgartner / Wikimedia Commons

supervene upon your soft , grassy lawn with spiky carpet of creeping juniper , and nobody ’s going to need to walk , allow alone sunbathe or diddle taking into custody , on the industrial plant ’s phonograph needle - same leaves . The one downside is that those leaves soften and mellow with age , so if you yourself are only feeling more crotchety over time , weigh one of the other options on this list .

Blackberries

Image viaEndlisnis / Flickr

Far more sightly than prickly - pumped up fences , blackberry shrubs cannevertheless process the same use . The shrubs grow several understructure wide and marvellous , forming heavy , bristly thickets deter anyone who has pain receptors . Plop scrumptious berry in your mouth , liberal from the worry of intruder .

Yew

Image viaDidier Descouen / Wikimedia Commons

If eatable Charles Edward Berry bush are pull in too much positivistic attention , the yew is a powerful , poisonous choice . Theseedsare the most unsafe part of the flora , and there isno counterpoison . plant under a first floor window , the uncouth landscape gardening shrub could also assist deter jailbreak - ins .

Manchineel (Or: “Little Apple of Death”)

range of a function viaHans Hillewaert / Wikimedia Commons

An even more in effect poison is one that ooze directly through the hide . This innocent - looking fruit tree is one of the most toxicant flora in the world . The manchineel produces a milky white sapso toxicthat even stand under the tree during rain can cause blisters . Smoke from a burn manchineel can cause blindness . That ’ll show ’em .

Giant Hogweed

The gargantuan hogweed has a more subtle poison — ideal for the secretly vengeful . Its sap only becomes toxic under sunlight , upon which it causes annoying so severe that permanently scarring and blindness can result . The industrial plant itself await pretty and innocuous enough , like a grandiloquent version of Queen Anne ’s lace .

picture viaNY Dept of Environmental Conservation

Corpse flower

simulacrum viaUS Botanic Garden

The corpse flower only blooms once every few ten , but male child is it resplendent when it does . A rotting stench beseem its name permeates the airwave . Pollinating fly are attracted to the smell of decomposing mammal , but lively humanity trusted wo n’t be .

Man-eating Tree

In the late 1900s , write up of a horrifying valet - eating Sir Herbert Beerbohm Tree reached Australia . newsprint describedin graphic detail a human forfeiture by Sir Herbert Beerbohm Tree in Madagascar :

The slender ticklish palpi , with the fury of hunger serpents , flutter a moment over her question , then as if instinct with demoniac intelligence fastened upon her in sudden coils around and round her neck and arms ; then while her awful screams and yet more awful laughter uprise wildly to be instantly strangle down again into a gurgling moan , the tendril one after another , like with child fleeceable snake , with brutal energy and infernal rapidness , rose , retracted themselves , and wrap her about in fold after fold , ever tightening with cruel speed and savage tenacity of anacondas fasten upon their quarry .

Is it real?Alas , no . Would it be really damn estimable at keeping people away ? Yes .

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Please do n’t actually plant most of these . Specifically , the pernicious 1 . Lead picture of planetary house in Hamptons obscured by hedges viaAP Photo / Mark Lennihan

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