Burglar-proof plants

White blossom and thorny stems of trifoliate orange (photo credit: Getty images)

Many of the plants listed can also be grown against the walls of houses, below and around windows, where burglars will be looking to gain access – a thorny but beautiful climbing rose does a brilliant job of this.

Roses

Most roses are thorny, but it's the climbing and rambling roses that are especially useful as they can be grown along walls and fences. Rambling roses are typically more vigorous and reach a larger size, so are good if you need to cover a long boundary, though they usually only flower once each year.

Holly

Holly has evergreen leaves, providing a prickly, year-round deterrent. They make great hedges and there are lots of lovely varieties to grow. Discover how to grow holly and 10 of the best hollies to grow.

Ilex aquifolium leaves — Spiky holly leaves

Solanum atropurpureum

Solanum atropurpureum comes with a few common names including malevolence and purple devil. It's almost obscenely thorny and is an easy-to-grow though short-lived perennial. Good for a spot in full sun, where it can withstand temperatures as low as -10°C for a short time.

White-stemmed brambles

Brambles are extremely thorny, but that doesn't mean you want them all over the garden. However, white-stemmed brambles like Rubus biflorus and Rubus cockburnianus are highly ornamental and not as vigorous as their green-stemmed counterparts. As the stems are white they're a particularly visible deterrent.

Berberis julianae

There are quite a few thorny berberis to grow, but Berberis julianae is among the thorniest. It has deep, evergreen foliage that contrasts nicely with the pollinator-friendly spring flowers.

Hawthorn

Hawthorn is a versatile plant in the garden and can be used a hedging plant, as a clipped shrub or left to grow into a small tree. The thorny stems will help to deter thieves, and the plant itself helps wildlife with spring blossom and autumn berries. Check out more berried plants for birds.

Blackthorn

Blackthorn, Prunus spinosa, is a bushy shrub or small tree with thorny stems. It's also a fantastic native plant for wildlife. If you need more persuading to have one (or several) in the garden, blackthorns are also the source of sloes, which can be used to make sloe gin, jam and chutney.

Poncirus trifoliata

The trifoliate orange or hardy citrus, Poncirus trifoliata, is a beautiful species with hooked thorns on the stems. Like other citrus, it has fragrant white blooms that appear in spring and fruits. The fruits aren't very palatable fresh, but they can be used to make marmalade.

More ways to burglar-proof your garden

Keep fences and walls in good condition and ensure they're too high to climb or plant thorny climbers along them
Install an alarm system that is visible at the front of the house as a deterrent – some even come with cameras
Install motion-activated security lights around entrances to the house
Ensure lawns are regularly mown and post regularly collected – it might otherwise look like you're away
Make sure doors into the house have deadlocks as well as top locks
Stop your sidegate being a point of access by keeping it locked, making the handle tricky to step on and over and install trellis over the top – it's tricky to climb over without breaking it
Padlock sheds and other outbuildings so any tools and other kit inside can't be accessed