How to grow Penstemon 'Sour grapes'
Keep in mind when planting that Sour grapes is thought of as half hardy, so remember to watch your frost dates and ensure you have this plant protected when the temperature dips.
Growing Sour grapes from seed
Transplanting Sour grapes
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Sour grapes is a half hardy plant.
Harvesting Sour grapes