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Diagnostic Clinic

2020 White Bear Avenue, Maplewood MN 55109 Directions

Please collect your sample on the day you bring it in, so it is fresh:

Fleshy plant parts (bulbs, fruits, and roots): Wrap specimens in paper towels to absorb all leaks.
Flowers and vegetables: Bring the entire plant, with the roots and surrounding soil if possible. Enclose the roots in a plastic bag and keep the soil from touching the leaves. Bring enough plants to show all stages of the symptoms--several whole plants if possible. Bring notes on the pattern of symptoms over the garden area.
Foliar disease: Bring enough of the plant(s) to show all stages of the disease--from healthy to very sick. Note the overall pattern on the plant. For example, are all the leaves affected or just the lower branches?
Grass samples: Grass samples are discouraged, as little can be diagnosed from a small sample. Minimum sample size is a 6"x6" section of grass with the roots. Include sick grass, grass on the edge of the sick area, and healthy grass.
Woody trees and shrubs: Collect branch samples that are showing the range of symptoms but are not dead.
Insect samples: If possible, bring several specimens. Include plant sample showing insect damage. Preserve soft-bodied specimens in rubbing alcohol.