Problem Corner

017Each year I grow Lupins because they are a classic cottage garden plant. They are colourful, the bees love them and they are easy to grow. But I am getting fed up with the constant attacks of Lupin aphid.020

No matter what I do (apart from insecticides which I don’t use) it returns each day, devastating the stems and flowers. The sticky residue is unsightly and the flowers are ruined. I think they’ll have to go.045

The other problem is the powdery mildew which attacks the Knautia macedonica as a matter of courseĀ each year. I have always associated powdery mildew with dry soils, lack of air circulation and overcrowding but I reckon I could plant this Knautia anywhere and it would suffer. I believe it is systemic in this plant. I have seven plants in various positions and every plant has powdery mildew. It is such a shame but it too will have to go.

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