# Brown Spots on Catmint Leaves
Catmint (Nepeta x faassenii) has fragrant foliage and blue flower spikes. The mounded plant with a loose growth habit has a mature height of 1 1/2 to 2 feet. The plant thrives in full sun and is drought tolerant. A fungal infection causes spots on foliage.
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Identification
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Catmint is susceptible to leaf spots caused by numerous fungi. These include Cercospora spp., Alternaria alternata and Phyllosticta spp. Foliage that is subjected to excessive moisture is more prone to fungal growth.
Symptoms
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Leaf spots vary in size from tiny, discrete dots on foliage to larger, raised ones. The spots are yellow- to brown-colored. Affected areas progressively grow in size and create large patches that sometimes cover the entire foliage area. Severe infection causes defoliation.
Management
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Keep plant area clear of weeds and fallen leaves as fungal spores thrive in the debris and continue to infect plant. Avoid the use of overhead irrigation and water plants early in the day to allow foliage to dry.
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