University of Illinois Extension
Main Navigation
Deciduous Trees & Shrubs
Evergreen Trees & Shrubs
Perennial Flowers
Turf
Vegetables
Other Problems
Credits
En Español
Problems of Perennial Flowers - Focus on Plant Problems - University of Illinois Extension
Bug Review
Hort Answers
Gardener's Corner Podcast
Problems of Perennial Flowers
Achillea
sp. (Yarrow)
Alcea
sp. (Hollyhock)
Aquilegia
sp. (Columbine)
Bacterial Leaf Spot
Calendula
sp.
Chrysanthemum
sp.
Convallaria
sp. (Lily-of-the-valley)
Echinacea
sp. (Coneflower)
Hemerocallis
sp. (Daylily)
Heuchera
sp. (Coral bells)
Hosta
sp.
Iris
sp.(Iris)
Paeona
sp. (Peony)
Phlox
sp. (Phlox)
Rosa
sp.
(Rose)
Tulipa
sp. (Tulip)
