(April 2005)

 What is wrong with these geraniums?

Look at the bottom lower leaves. They appear scorched.

Answer: Geranium Leaf Scorching - The problem was observed where lower leaves showed a silver scorching. There was no evidence of spray or fertilizer damage. A pour through leach pH was 4.5and E.C was 8.01 millimhos. Normally at that high E.C. leaves should have shown severe browning and very dark green color. In this case the plants were sitting under hanging baskets and thus were shaded quite a bit. If they have been moved to sunny location, the leaves would have shown serious damage. I think growers are just too busy to monitor pH and E.C. on a regular basis.