I buy plants in the spring to produce masses of colourful flowers in my garden through the summer and autumn.
I would like to know which plants are annual and which are perennial, so that I don't have to buy so many new plants every year.
It might just be a matter of directing me to a website that just lists a large variety of colourful flowering plants in these two categories.
Are there any annual plants that can be kept indoors over the winter and will will continue to grow next spring?.
Are there any easy ways of getting this years annuals to produce plants that can be grown again next year? Or is this, by definition, impossible?