Bulletin #2765, Common Problems in Container Gardens
Adapted for Maine by Associate Extension Professor Kathryn Hopkins.
|Plants tall, spindly, and unproductive||Insufficient light||Move the container to a location that receives more light.|
|Excessive nitrogen||Reduce feeding frequency.|
|Plants yellowing from the bottom; poor color, lack vigor||Excessive water||Reduce watering frequency; check for good drainage.|
|Low fertility||Increase fertility level of the base solution.|
|Plants wilt although sufficient water is present||Poor drainage and aeration||Use soil mix containing higher percentage organic matter; increase the number of holes for drainage.|
|Marginal burning of leaf edges||High salts||Leach container with tap water at regular intervals.|
|Plants stunted in growth; sickly, purplish color.||Low temperature||Relocate container to warmer area.|
|Low phosphate||Increase phosphate level in base solution.|
|Holes in leaves; leaves distorted in shape||Insects||Hand-pick or use insecticidal spray.|
|Leaves with spots, dead, dried areas, or powdery or rusty areas.||Plant diseases||Remove diseased areas where observed. Call your University of Maine Cooperative Extension office or bring in a leaf for diagnosis.|
Adapted with permission from Dr. Sam Cotner, Vegetable Gardening in Containers, Texas Cooperative Extension, The Texas A&M University System.
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