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There have been several recent questions about dealing with a plant floating in reservoirs. Here's Weed Scientist Emeritus Roncoroni's response to them. Pacific Mosquitofern, (Azolla filculoides) often referred to as Azolla, is native to California.

Unlike other plants, avocado (Persea americana Mill.), is not a host for very many viral diseases.

Implications for tequila growers Agave are a common sight in Southern California and are frequently used in landscaping for homes, businesses, and in public spaces. You've almost certainly seen agave growing in your neighborhood and may even have some growing yourself.

Avocado fruit set is lousy up and down the coast this year. The trees were flowering in many places from January to June. They kept trying to set fruit, but nada.

It seems like the simplest thing is the hardest. Recently, I was called out to evaluate why newly planted trees were failing at two sites and they both had a common problem. In one case, the trees had been planted too deeply at the beginning.