|The leaves on my verbena are starting to yellow and the plants aren't producing any blooms. These plants are planted in the ground and have been given plant food regularly. The verbena in pots are doing better, although they aren't producing blooms like when they were first purchased. Any idea what may be causing the yellowing leaves and lack of blooms?|
When fertilizing, apply it at the edges of the plant, where the feeder roots are actively taking up water and nutrients. Use a fertilizer with a higher middle number (phosphorus) to promote bloom. Not knowing which verbena you have and there are so many, but some may have shorter bloom periods than others. Deadhead spent flowers to increase the bloom period.