Most fruits contain seeds, and some plants culinarily regarded as vegetables - including tomatoes, cucumbers and peppers - are botanically fruits because they contain seeds. When you buy them at a supermarket or greengrocer's, can you use their seeds to grow them in your garden? "Yes, but there's a high risk you won't get anything that tastes good," says Christine Scherer, horticultural technician at the Bavarian Garden Academy in Germany. The reason, she explains, is that F1 hybrid (first filia