July 12, 2006
Bitterness in cucumbers is caused by the compounds cucurbitacin B and cucurbitacin C. The cucurbitacins are normally found in the leaves, stems and roots of the cucumber plant. The cucurbitacins spread from the vegetative parts of the plant into the cucumber fruit when the plants are under stress. Hot, dry conditions are usually responsible for bitterness in cucumbers in Iowa.
When selecting shrubs for the home landscape, gardeners should carefully examine growing conditions at the planting site. Most shrubs perform best when grown in areas that receive partial to full sun. However, there are shrubs that can be successfully grown in partial shade. (Sites in partial shade receive 2 to 4 hours of direct light.) A list of deciduous shrubs that can be grown in partial shade is provided below.