Joseph Lofthouse wrote:It looks to me like something is wrong with the soil. The light green (yellow) color of the leaves isn't usual for that species. Weird colors in a plant's leaves are often due either to something toxic being in the soil, or to too much/little of an essential nutrient, or too much/little water, or the wrong pH, or any combination of these.
In cases like this, I find it easiest to start over with different soil.
Yikes! We got a bunch of this soil from the city. My parents are using it too. Several of the plants had stalled during a cold spell we got and several of the leaves turned yellow. Now everything seems to be improving with warmer temperatures. If it was something toxic wouldn't it be garden-wide since everything is planted in the same soil?