Answer: How frustrating! It would be surprising if slugs bothered your plant. You might however open a few buds and make sure there is no evidence of insect damage. Insects and disease problems are fairly unusual on these plants, but you might find something. In general heat does not bother these plants (they grow well in warmer areas through zone 9) either. To be very honest I suspect dry weather is to blame. These plants need a constantly moist yet well drained soil and this can be difficult to maintain during the summer. The plant may also be a bit stressed since it is still establishing itself and just beginning to try to bloom well. A thicker (say three inches) mulch might help, as would the addition of copious amounts of organic matter to the soil. Finally, dig down a bit and check the soil with your finger after you water just to make sure the soil really is moist.
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