My guest this week is Jonathan Sheppard, a political lobbyist who somehow fell into becoming the holder of 2 national plant collections; hollyhocks and cosmos. Jonathan talks about how to grow hollyhocks and cosmos, what you can, or can’t do about rust, good varieties to try and what to look out for in the coming year in terms of new varieties and colours.
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What we cover
Hollyhocks and rust
When to sow hollyhocks
Are they biennial or perennial?
The best places to grow hollyhocks
Some of the best varieties
The cultivation of Cosmos
Jonathan Sheppard on Twitter