Italian cypress trees don't do well in Florida humidity

Published: Saturday, August 14, 2010 at 6:01 a.m.
Last Modified: Thursday, August 12, 2010 at 6:11 p.m.

Q: I have planted two Italian cypress trees to frame out the entrance to our home. One tree is looking fine; the other is browning and dying on the lower branches on the left side. I would hate to lose one of the matched pair. Do you have any suggestions?

A: The Italian cypress tree has long been planted for its distinctive columnar shape. This form adds elegance to any large landscape. Ultimately reaching 40 feet tall and 4 feet wide, it isn't recommended for small lots. But used as an accent, the Italian cypress delivers a strong architectural element to the yard. My favorite ones in town are at many of the Italian restaurants. You are discovering though that we don't live in the dry Mediterranean climate of Tuscany. Our Florida humidity can bring on fungal problems in this evergreen. I have noticed those Italian cypresses that get hit by an irrigation spray on a regular basis can develop one-sided fungal problems. Overhead watering also can contribute to the problems. Bottom-up browning or decline also is a symptom of wet root conditions. Try to control this problem by changing the cultural practices of this tree, such as making sure it is not being hit by a stream of water and perhaps reducing the water getting to the roots. Also, the fungus that affects Italian cypress needles is wind spread. Evaluate the air movement around this tree and see to it that it has plenty of good air flow. Heavy plantings can trap spores in the landscape. Fungicide sprays can help. Look for one that contains copper, such as Kocide. Spray the tree at 10-day intervals from bud break until new growth matures.


Q: I have this plant that just appeared in the shady part my yard. It looks sort of like a spiral ginger, but on a separate stalk it has a cluster of berries a little smaller than my fist. Do you have any idea what it is? Is it an invasive weed?

A: Lucky you, your description and picture are of a wonderful native plant that occurs in the woodlands around North Central Florida. The plant is called the green dragon plant, or Arisaema dracontium. If you had discovered the plant while it was in flower you would have seen a green "jack in the pulpit"-type bloom. The exotic bloom is followed by a cluster of orange berries that are almost as showy as the tropical foliage that accompanies it. Green dragon does best in shady, moist areas that have organic soils. It is a native plant and would never be considered invasive. Green dragons are not considered a common wildflower, so please leave it alone or encourage it as a welcome guest in your shade garden.

Wendy Wilber is an extension agent with UF/IFAS. E-mail her at


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