According to David Coton, that is the question asked by the Horticultural Trades Association's National Garden Gift Vouchers Scheme, who want to increase awareness of the positive contribution plants can have on people's lives.
Heating will be a deciding factor on the variety of plants you are able to grow in a greenhouse and the number of plants that can be kept over winter.
The temperature during the winter shouldn't dip below 10C and throughout the year the daily variation shouldn't be more than 10C, this can be controlled by a combination of heating, ventilation and insulation.
To heat your Greenhouse you have a choice of tree main types of heater that you can use if it is a domestic greenhouse. Of course all have their advantages and drawbacks and below I have listed these in an easy to follow list.
It's important to know about them, this way you will know which one will suit your needs and situation perfectly. The three types available are Electricity, Gas and Paraffin.
There are also renewable energy sources available to use which I will go through below the list.
Solar energy or wind turbines may become a consideration in the future but at the moment they are far too expensive due in part to the poor heat retention qualities of a greenhouse.
Spent cooking oil is used occasionally commercially but is messy, smelly and not really suited to small scale production.
Palram offer a 'world of outdoor solutions', and David Coton reports that their impressive range of polycarbonate structures, including gazebos and skylight sheds, will soon be available on Gardensite.
Regular readers of the Gardener blog will recall last year's 'Shed Of The Year' competition. Martyn Loach now reports on the remarkable structures vying for the 2015 accolade.
Char-Broil has been the best selling barbecue brand in the US since 1948, and David Coton is pleased to announce that Gardensite will shortly be distributing their products.
Suburban gardens, once the well kept privet edged pride and joy of the majority of householders, are rapidly becoming paved over according to a recent report from the Royal Horticultural Society that Nathan James Dodd has been reading.