In order to get the best seeds you’ll need to collect from ripe, healthy tomato fruits.
Unripe tomatoes won’t have had enough time to produce mature seeds.
Cut or squash the tomatoes to extract the seeds.
Discard the flesh of the tomatoes, saving only the seeds.
The seeds will be surrounded by a jelly-like ‘seed coat’ which needs to be removed
The best way to get rid of the seed coat is to soak the seeds in water for 7-10 days.
After this period most if not all the jelly will have rotted in the water leaving just the seeds.
Pour the seeds in to a seive and rinse with clean running water. A gentle rub with your fingers will seperate any remaining jelly.
Shake the seive to remove as much water as possible before tipping the seeds on to a piece of tissue paper. Seperate the seeds so that they are not touching each other and leave to dry for a further few days.
When completely dry place the seeds in a sealed paper bag and keep cool and dry, or you can use a sealed plastic bag and keep the seeds in a fridge (not the freezer).
Remember to lable the seeds.
Properly stored, the seeds can stay viable for a number of years.
Tomato advice is just one of the thousands of plant advice on the Complete Gardens CD-ROM