Posts by Rick Helpingstine
A leaf analysis provides the most accurate indication of a plant's overall health. Here's some advice for collecting samples and interpreting test results from the lab.
Checking the electrical conductivity (EC) in potting media is one of the quickest and least expensive ways to evaluate fertility status.
Applying silicon is a practical and economical way to make container plants stronger and more insect, disease and stress resistant.
Plants aren't able to think the way we are, but that doesn't mean they're helpless.
Ambrosia beetles can cause significant problems in tree nurseries and in landscapes. Lynn Griffith has some excellent advice on identification and control of these pests.
Here's some great advice from Lynn Griffith on liming strategies for plants that will be in the nursery for more than a year.
There are times when laboratory work is needed for media, tissue, soil and water. Here are some lab recommendations from tropical plant and soil expert Lynn Griffith.
This month we take a look at the acidity of soluble fertilizers and other factors that contribute to media pH.