Extension > Garden > Diagnose a problem > What's wrong with my plant? > Annuals and Perennials > Petunia > Stunted plant
Petunia > Plant > Stunted plant
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Aster Yellows
Phytoplasma
- Leaves are small and yellow on a few to all stems
- Flowers are small pale green to white and underdeveloped
- Clumps of weak shoots known as witches broom develop throughout the plant
- Infected plants are often stunted
- Often one to a few random plants within a flower bed are infected while others remain healthy
- More information on Aster Yellows
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Black Root Rot
Thielaviopsis basicola
- Leaves turn yellow and wilt; leaf veins may remain green
- Plants are stunted
- Dark sunken black lesions occur on roots
- Stems below ground may develop black longitudinal cracks
- More information on root rot
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Tobacco Mosaic Virus (TMV)
- Symptoms may vary depending on cultivar, age of plant and other factors
- Leaves have a mosaic pattern of light and dark green
- Leaves may be distorted, curled or twisted upward
- Lab test needed to identify which virus is causing the problem
- More information on TMV
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Impatiens Necrotic Spot Virus (INSV) or Tomato Spotted Wilt Virus (TSWV)
- Symptoms may vary depending on cultivar, age of plant and other factors
- Brown to black ring spots or flecks on leaves
- Plants may be stunted and have distorted leaves
- Severely infected young plants may turn brown and die
- Lab test needed to identify which virus is causing the problem
- More information on INSV and TSWV
