Although you can buy plant feed, Monty decides to make his own plant feed - one out of comfrey and one out of nettles. Not only do nettles make a good feed that is rich in nitrogen, they are also useful for another reason - they attract butterflies because caterpillar larvae feed off them, they attract predatory insects. To make the feed, the process is the same for both weeds - Monty uses a bucket, cuts up the material and fills up the bucket with it and tops it up with water. He is then going to leave the feeds for a month to brew. Carol Klein enjoys the beauty of one of our unsung native flowers, the geum, and visits a gardener, Sue Martin in her cottage garden which holds the national collection of cultivated forms. Formula 1 supremo Sir Frank Williams opens his garden at Inholmes as part of the National Garden Scheme Festival Weekend in memory of his wife Virginia who died earlier this year after a long battle with cancer. We also met up with the Head Gardener there, Mark Lyons, who designed the garden together with Lady Williams.