Planted too deep: If the eyes are more than two inches underground, lift and replant.
Too young, or moved and divided too often: Allow the plant more time to develop; it should be in the same spot for at least five years.
Large clumps transplanted without proper division: Divide (3-5 eyes per division) and replant.
Undernourished: In this case, buds form but don’t develop. Top dress with compost, avoiding the crown of the plant.
Overfertilized: In this case, the plants have deep green foliage but form no buds. Water thoroughly to wash away excess nitrogen and cut down on fertilizer.
Too much shade: Plants will be tall and lanky; replant in full sun or part shade.
Not enough moisture: water to bottom of roots. (Established plants will bloom even when severely drought-stressed, although not profusely.)
Root competition from neighboring trees or shrubs: Replant outside the neighbor’s root zone.
Buds develop but fail to open: These may be damaged by late frost, disease, drought, or being waterlogged.
Root system undermined by gophers or moles: Put in a wire mesh barrier around the bed.
