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.
Another culinary competition sizzles onto our screens this Friday with the arrival of 'BBQ Champ'. Nathan James Dodd reports that eight amateurs will be competing for a £25,000 cash prize.
Many gardens have magical qualities and, using Toscano resin figurines, David Hall has transformed his garden into a place that will truly enchant children and adults alike.
So long a male reserve, the garden shed is now gaining popularity among women. 'She-sheds' are the new 'man caves' and used for a variety of purposes as Nathan James Dodd has discovered.
Although disappointing at the moment, the summer may well heat up over August, and Dan Everton says this is a time when you must keep checking the health of your pond and aquatic plants.