Updated Florida Exotic Invasive Plant List

The Florida Pest Plant Council has updated their exotic invasive plant lists for 2011.  The list is an excellent resource for ensuring landscape selections do not include plants that can escape and endanger native habitats. FLEPPC separatesd invasives into two categories, I and II. 

Category I includes "invasive exotics that are altering native plant communities by displacing native species, changing community structures or ecological functions, or hybridizing with natives. This definition does not rely on the economic severity or geographic range."

Category II invasives are plants "that have increased in abundance or frequency but have not yet altered Florida plant communities to the extent shown by Category I species. These species may become ranked Category I, if ecological damage is demonstrated of the problem, but on the documented ecological damage caused."

New plants added to the 2011 Category I list:

• Deparia petersenii, Japanese false spleenwort
• Lumnitzera racemosa, black mangrove - Not to be confused with native black mangrove, Avicennia germinans
• Phymatosorus scolopendria, serpent fern, wart fern

New plants added to the 2011 Category II list:

• Ardesia japonica, Japanese ardesia
• Bruguiera gymnorrhiza, large-leaved mangrove
• Cocos nucifera, coconut palm
• Syzygium jambos,  Malabar plum, rose apple

Corrections on the plant list include: 

Jasminum sambac and Solanum jamaicense removed from Category II based on lack of data in natural areas. Urena lobata moved from Category II to Category I.



USDA-NRCS

City and county planners, nurseries and growers, and landscape architects and designers should make note of these new changees.

No Rest For The Wicked

The wicked plants in your garden are not necessarily turf weeds but exotic invasive trees, ornamentals, and vines that take over ecosystems and spread their havoc far and wide. The Florida Exotic Pest Plant Council, known as FLEPPC, has a downloadable brochure for your files, maintenance company crew, or your HOA to determine if a plant species should be removed. If a HOA committee is renovating common areas or older landscapes, make sure that these plants are not in the design.

Many of these beautiful and hardy plants were sold and encouraged in previous years so its not anyone's fault that they are in your yard.  But while Category 1 Exotics are not illegal to sell nor mandatory to remove, they are still expanding into Florida's habitats and will for decades to come. Exotic invasives are dangerous because they are easily propagated by seeds and spread by underground roots. Birds and winds from tropical storms help dispurse the seeds increasing their range out of neighborhoods and across the state. As these "Most Unwanted" plants multiply, they compete with native plants for space and resources.

 

In your landscape, exotic invasives grow very quickly and have little to no pest problems to help decrease their numbers. Exotics, then with water and fertlizer that in their homeland countries would not normally get so their species has no natural controls, and populations explode.

Who are these most wanted wicked plant species? Are they in your backyard? Here are some of the ones I frequently see:

• Coral ardesia, Ardesia crenata
• Asparagus fern, Asparagus aethiopicus (formerly Asparagus sprengerii)
• Orchid tree, Bauhinia variegata
• Camphor tree, Cinnamomum camphora
• Wild taro, Colocasia esculenta
• Heavenly bamboo, Nandina domestica
• Sword fern, Nephrolepis cordifolia
• Mexican petunia, Ruellia tweediana
• Mother-in-law tongues, Sanseveria hyacinthoides
• Chinese tallow tree Sapium sebiferum
• Brazilian pepper, Schinus terebinthifolius
• Arrowhead vine Syngonium podophyllum

Free Guide To Identifying Southern Invasive Plants

The USDA Forest Service Southern Research Station has created a free pdf download of invasive plant species, “A Field Guide for the Identification of Invasive Plants in Southern Forests.”

The book is a more comprehensive identification guide to nonnative trees, shrubs, vines, grasses, ferns and forbs invading the region’s forests and other natural areas. The revised guide includes 23 more plant species with updated information on the original 33 species; 241 new photos and images and a new “Resembles” section so users can identify plant “look-alikes.”

The book’s appendix contains the most complete list of nonnative invasive plants in the 13 Southern states, providing common and scientific names for 310 other invading species including, for the first time, aquatic plant invaders.

Complete with color high density photographs, it takes a few minutes to download or you can email:

To: pubrequest@fs.fed.us
Subject: Publication Request
In email, type: Please send me: A field guide for the identification of invasive plants in southern forests (GTR-SRS-119) by Miller, James H.; Chambliss, Erwin B.; Loewenstein, Nancy J.

This publication should be in every Master Gardener Clinic, County Extension office, Master Naturalist, eco-tourism guide, and environmentalist's library. The pdf is an updated version of their original publication from 2003.

In Your Backyard - "2010 New Year Resolutions"

Happy New Year! My most important New Year's resolution is to keep this blog up to date! That being said there's a few things that I want to become more serious about and a few promises to myself to nurture my gardening soul. These resolutions will not only help you save money, they will help make our world a better place without compromising our freedom.

1. Get a Rain Gauge - Know how much rain your backyard receives. Adjust irrigation system accordingly. Using a rain gauge to water your landscape only when necessary will help save you money but also save you horticulture problems in the coming year. Most of the disease and pest problems your landscape has to endure is not their fault but the fault of the caretaker's compassionate but cruel care. Most people overwater their turf creating a short-root system. A short root system will be more susceptible to insects, more susceptible to diseases, and be less drought-tolerant. St. Augustine turf only needs 1" - 1.5" inches of water a week.






2. I'm going to create a living fence of orchids. Hanging them in clay pots from my shaded fence. Orchids are easy to grow outside under shade in Florida. Right now I have dendrobiums hanging from beautiful dried wood and they bloom for me three times a year with only Mother Nature's help. Here's another good orchid site.





3. I'm going to visit a Lake County Open Preserve that I have never been to or hiked. LCWA provides free canoe and kayak rentals. Great opportunity to see pristine and restored wetlands, scrub habitats, and native plants. I've been to Bourlay Historic Nature Park, Crooked River Preserve, Flat Island Preserve, Hidden Waters Preserve, Sabal Bluff Preserve, and Sawgrass Island Preserve and Wolfbranch Creek Preserve. This leaves Lake Norris Conservation Area to explore. Can't wait for spring to get here!





4. I am resolved to educate more people to remove exotic invasives from their yards! Invaders like Brazilian Pepper and Chinaberry Trees. The Florida Exotic Pest Plant Council has a great brochure to download and learn about exotics.


5. Reduce my water use by 10,000 gallons this year. Replace my toilet. Fix a leak Replace clotheswasher. Showerhead. Based on one 10-minute shower a day, an energy-efficient, low-flow showerhead can save up to 10,000 gallons of water a year, representing a $145 energy savings You can also check out The Best Low-Flow Showerhead review.

Other topics on the radio show today:

• Cold hardy palms. Palms that won't freeze in Florida or even South Carolina!



February 2009 - Frozen Queen palms at a nursery in Volusia County (and this winter will be colder.)


• Weather Underground - Check current weather and predictions, weekly, monthly, and annual rainfall.


• Word of the Day: Humectants - A humectant is a substance used primarily in foods and cosmetic products to help retain moisture.

LISTEN TO TODAY's SHOW.