Our Garden Guru ROB WILLIAMS of The  Secret Garden, Mamhilad, is here to answer your gardening questions.

Q: I HAVE hundreds of tiny tomatoes coming on my plants ... Is it best to leave them outside whilst the weather is okay or would they have a better chance in the greenhouse? CJ via Facebook

A: Best to move your tomato plants into the greenhouse to give them the best chance of ripening. I have heard old banana skins help to ripen tomatoes and in any case green tomato chutney will use them up.

Q: I have an olive tree outside - what do I do with it over the winter? DE, Chepstow

A: Olive trees can take the cold down to minus 10 degrees for a few nights. If we get a prolonged period of freezing temperatures they could be in trouble especially if they are in containers as the roots will freeze. If it’s planted in the ground it should be fine, if it’s in a container move it to a sheltered spot away from north or east winds and insulate the pot with bubble wrap or hessian.

Q: How hard can I prune my rosemary? It’s beginning to take over the garden! ME, Blackwood

A: My mum used to say, if you have rosemary in your garden you will have plenty of friends. It was also believed that rosemary could be used to bless the land to give good crops and harvest! You can prune rosemary quite hard but it’s best done in early spring after the worst of the winter cold has past.

Q: I love wild garlic, but can I find the same plants anywhere to buy for my own garden, rather than disturbing them in the wild? BF, Allt-yr-Yn

A: Wild garlic is a woodland plant. It flowers in the spring and you can eat any part of the plant but mainly the leaves are used. You cannot buy the bulbs from many garden centres but it can be purchased from specialist website such as ‘Naturescape’ who sell many varieties of wild plants.These are bulbs grown in the UK from cultivated stock and are probably your best option for growing your own plants.

Tip of the week. Apple Storage. You can store apples for several months if you choose carefully picked apples so they are not bruised, wrap each individual apple in newspaper and place on a tray. Store in a cool, dark place but do not allow to freeze as this will rot the fruit.

Send our garden guru your questions. Email maria.williams@southwaleasargus.co.uk, tweet @ArgusMWilliams, leave a message on the Argus Facebook page, or write to Garden Guru, Newsdesk, South Wales Argus, Cardiff Road, Newport NP20 3QN