thanks for the info, everyone. I've been giving it lots of drinks. It is less hot today and looking less sickly. hoovb, thanks for posting the photos of your beautiful trees. They are huge, and I wasn't aware they get that big. I'm pretty annoyed that my landscape designer would put it there knowing this gets big. Here's a wider shot of the front. As you can see, the fern tree is right next to the garage, so we have to back our car out right next to it. My car already sort of brushes up against it when I back out. I'm in agreement with you all it needs moved. Any thoughts on what we should replace it with? Something that has some height? The spot gets mostly shade/dappled sun.

Australian tree ferns: Plant possible invasive concern by Carolyn Lucas West Hawaii Today clucas@westhawaiitoday.com Wednesday, March 18, 2009 9:07 AM HST Though prized for its distinctive looks and rapid growth, the Australian tree fern is becoming an increasingly common and alarming fixture in Kona neighborhoods, according to a recent islandwide survey by the Big Island Invasive Species Committee's early detection crew. On the underside of its triangular fronds with lacy blades are millions of spores, which breezes -- as well as feral ungulates -- carry far and wide. This tree fern (Spahaeropteris or Cyathea cooperi) is already displacing native forests on Kauai, Maui and Oahu. Watersheds are also being choked. Such propagation is just beginning on the Big Island, said Page Else, spokeswoman for the Big Island Invasive Species Committee. "The tree fern crowds out our native hapuu, the mother of the forest. The soft fibers of the hapuu nurture young native seedlings of native plants like ohia and olapa," she said. "The Australian tree fern has a harder, scaled trunk which doesn't make a good home for seedlings. Consequently, the foreign plant can take over in our forests, changing the forest structure, lessening the number of native plants and decreasing the ability to capture water and provide good water quality in watersheds." It's no wonder that the Australian tree fern appears on a list of the most invasive plants in Hawaii, prepared by the Hawaii State Alien Species Coordinator and the Department of Land and Natural Resources' Division of Forestry and Wildlife. Officials urged people to not cultivate any of the listed species anywhere in Hawaii. The Big Island Invasive Species Committee recently issued an Australian tree fern alert, spreading awareness about the weed and hoping that residents will help prevent its spread. People should report tree ferns by calling the state pest hotline at 643-7378. Those who have purchased the popular ornamental but suffered buyer's remorse and now want to remove it can either snip the bud or cut down the tree fern and treat it with herbicide. "They should be aware that their tax dollars will be put to work combating the rapid growth of this plant in public watersheds as seeds spread out of their yard into other locations," Else said. Two years ago, the Kauai Watershed Alliance contracted the Nature Conservancy to coordinate a response to the invasive tree fern. Crews on foot are sent into valley uplands to remove plants at a cost of $365 per acre. Helicopters with herbicides spray in more remote, dangerous areas. The aerial spraying costs $560 per acre, Else said. James Leary, invasive weed specialist at University of Hawaii at Manoa College of Tropical College Agriculture and Human Resources, has been experimenting with an innovative way to apply herbicide selectively to Australian tree ferns by using paintball guns with a special pesticide formulation. While people may be fond of the tree ferns, a wide variety of noninvasive alternatives, including the native hapuu, can be used as ornamentals. Because each yard is different, residents can visit a nursery and talk to an expert to find the best fit. Many nurseries -- including 15 on the Big Island -- agreed not to sell the tree fern after learning its potentially detrimental impact. For more information, call the Big Island Invasive Species Committee at 933-3345.

Yes you can cut a Cyathea cooperii off if it gets too tall. Keep the top plus enough of the top trunk to replant at the height you want plus half a metre to be buried in soil. . The bottom part will not regenerate and needs to be removed. Trim back the old fronds being carefull not to damage the new unfurling ones. Replant in fresh slightly acid soil, give it some organic fertilizer, water the trunk and base well but not the fronds. Make sure there is adequate drainage. give the plant some dappled shade if you can.

I live about as far away from you as possible so my advice may mean nothing - to me it sounds like they are in shock. It could be stronger winds then they have ever experienced before, stronger sunlight or something about the weather that they are not used to dealing with (like salt spray). With mine, I water the trunk every day. I mean I spray the trunks of all the tree ferns more than I ever water the soil in the pots they are growing in. They get most of the soil moisture from rain but the wind can dry out the trunks which seem to prefer being moist all the time. Whenever I repot mine I cut off all but one or two fronds to help it adjust to the new soil and any damage done to the roots while being repotted. I've had mine for many years and the tallest one is over 6 feet tall. I don't really baby them, but I keep them moist, water the trunks and try to keep them out of the wind.