They start out yellow-green instead of deep green, they dry and yellow, then brown and plant dies. I water daily and miracle grow weekly, and are mulched. Sunlight all day. Thanks for caring.
Gosh Don, it sounds like you're doing everything right! Yellow-green leaves make me think they need iron but with the Miracle Grow I think you've covered that base. Why don't you ask Debbie Benge Frost, the local expert at: Email: dbenge@ag.tamu.edu You might also find some answers at their website: http://westtexasgardening.org.