by Les Harrison | May 6, 2014
Purple Nut Sedge aggressively moves into any sunny open space and crowds out competitors.
The spring season in panhandle Florida is colorful. Every location from frequently manicured gardens to untended fields and pastures are exploding with hues and tones pleasing to the eye.
These heralds of the warmer weather to come are trailed by the warm season’s greenery which fills in the gaps between blooms. The consistent and ample rains have assured the continuance of a bright and pleasing landscape backed by countless shades and textures of green.
The adequate moisture has also assured the aggressive growth of an individually small, but collectively gigantic, weed which plagues every member of humanity associated with attempting to cultivate plants.
Purple nut sedge, Cyprus rotundus, has emerged en mass from every possible sunny location with soil. This native plant is a rapidly spreading perennial which will take every opportunity to colonize new locations.
The identifier purple is in the name because there is a purple-tinged section of this sedge where it emerges from the ground. The plant is sometimes referred to as purple nut grass because of its long narrow leaves and its erect growth pattern originate from a nutlike basal bulb.
There are other sedges in north Florida, but only yellow nut sedge is identified by a specific color. It is sometimes called chufa and is a popular feed for wild turkeys and turkey hunters.
The dark green, smooth leaves blend in easily with many turf grasses. Beneath the soil’s surface and out of sight, the root system grows in every direction.
Purple nut sedge’s roots are a series of spreading rhizomes and tubers or bulbs identified as nutlets. Each nutlet sprouts a new bunch of grass-like leaves and continues growing the rhizomes.
The densely population of this sedge quickly crowds out most other plants, but most especially turf and forage grasses. It can reach a height of 18 inches on its triangle shaped stem.
The root system’s design assures this plants survival and continued success. If pulled, the rhizomes break off leaving a large number of nutlets to develop and emerge at a later date.
If plowed or tilled, the nutlets are detached and spread to new and inviting locations. Many times nutlets lodge in tillage equipment only to shake loose and deposited in un-colonized locations.
Most herbicides have little on this sedge’s hardy root system. Selected pre-emergent herbicides will prevent many of the nutlets from germinating in spring.
North Florida’s sandier soils provide an ideal growing environment for purple nut sedge. The occasional periods of water saturation from storms do not deter this plant’s rapid and growth expansion to new areas, but it will not tolerate heavy shade.
Purple nut sedge’s extreme competitive nature is a heavy consumer of plant nutrients and robs rivals of important compounds necessary for their survival. Additionally, it produces an allelopathic substance which is toxic to some plants.
Purple nut sedge is found in many locales in North America where the environment is hospitable to its growth. The lush green leaves and touch of purple signify work for anyone who is maintaining a lawn or garden.
To learn more about purple nut sedge in north Florida contact your local UF/IFAS County Extension Office and read this informative publication on purple nutsedge.
by Alex Bolques | Mar 25, 2014
Black Titi in bloom. Flower clusters upright at tips of branches. An excellent source of nectar and pollen for honey production. Image: Alex Bolques
Black Titi (also known as Spring Titi or Buckwheat Tree (Cliftonia monophylla (Lam.) Britton ex Sarg. is a native shrub or tree that can be found growing along streams and boggy areas of the Florida Panhandle. It can tolerate acidic wetland soils and once established can also tolerate dry soils in the landscape. Black Titi can reach 15 – 30 feet in height with 3 – 4 inches of trunk diameter. Its bloom period lasts February through March.
Bee visits a Black Titi flower. Image credit: Alex Bolques
Beekeepers love it because it is a wonderful source of nectar and pollen for honey production. Beginning beekeepers may confuse Black Titi with White Titi (also known as Summer Titi or Swamp Titi (Cyrilla racemiflora L.). It should not be grown as a honeybee pollinator plant. The nectar and/or pollen of White Titi can promote a condition known as “Purple brood”, which can be detrimental to honeybee immature stages.The flower of the spring flowering Black Titi is a raceme, a cluster of flowers along a central stem, that appears as an upright cluster on the tip of branches. The flower of the summer flowering White Titi is also a raceme, not as upright, more elongated. Visit the USDA Natural Resource Conservation Service plant database website and click on the image tab to see Black Titi (Buckwheat Tree) or White Titi (Swamp Titi) to view differences in flower morphology.
by Carrie Stevenson | Mar 18, 2014
The first week of March every year is designated “National Invasive Species Awareness Week,” an initiative to draw attention to the thousands of invasive plants and animals that move into our state and country every year. However, this is a problem that should draw focus year-round.
Invasive species are non-native or exotic plants and animals which can cause harm to the local economy, human health, and the environment. They often out-compete native species, causing habitat degradation, wildlife community imbalances, and diseases that can destroy economically important plants. This is a worldwide issue that can be addressed on local levels. In Florida, researchers have documented over 1,180 exotic plant species and more than 500 non-native fish.
Beach vitex is a newly introduced invasive found on our local barrier island due systems. Photo credit: Rick O’Connor
Prevention is among the most effective ways to manage invasive species. Gardeners should be aware of invasive species and make sure they are not unintentionally passing them on to neighbors or natural areas. While many non-native plant species perform well in our yards and do not become invasive, pay close attention to new plants that start taking over your yard. If you’re unsure of the status of a plant, call your local Extension Office or check the Florida invasive plant list.
When enjoying outdoor activities such as camping, hiking, or biking, be sure to inspect what might have attached to your clothing to prevent further seed dispersion.
Wild hogs cause significant damage to ecosystems throughout Florida.
Released pets are a nearly impossible problem to manage, as well. If you have a pet that you can no longer keep, please find an alternative home for it. Releasing pets into the wild can have serious implications for native wildlife and cause harm to your animal. One needs look no further than the python problem in the Florida Everglades to see the extent of damage this unwise practice can cause. Great information on what to do with unwanted pets can be found at Habitattitude.
Among the most important invasive plants to be aware of in our area include: cogongrass, Chinese tallow (popcorn trees), coral ardisia, water hyacinth, Japanese climbing fern, Chinese privet, tropical soda apple, torpedo grass, and beach vitex. Among invasive animal species in the area, be on the lookout for: lionfish, crazy ants, feral hogs, and Cuban treefrogs.
There are many ways to get involved in the battle against invasive species, including joining your local Cooperative Invasive Species Management Area (CISMA) group. Special thanks to Brooke Saari (bsaari@ufl.edu) for contributing to this article.
by Blake Thaxton | Mar 12, 2014
Oakleaf Hydrangeas (Hydrangea quercifolia) make a beautiful choice for the home landscape. They present great interest in all seasons of the year. Not only do they produce beautiful blooms in summer, but the plant also provides great fall color. When making a choice for a new edition to your landscape, select Oakleaf Hydrangea !
Jeff McMillian @ USDA-NRCS PLANTS Database
Oakleaf Hydrangea is native to Southeastern United States. I have personally observed hundred of Oakleaf Hydrangeas along streams and on the mountains at the Talledega National Forest in Alabama. When I saw them they were dormant, as it was February, but it would be a magnificent site when they are all in bloom.
Jeff McMillian @ USDA-NRCS PLANTS Database
Oakleaf Hydrangea blooms are magnificent panicles that change throughout the season. First creamy white color, turning to a pink and finally desiccating to brown. There is something attractive about the brown dried bloom and it holds on for quite some time. In winter, the exfoliating bark make it attractive even though it is without leaves. This trait, along with the dried out bloom, make it enjoyable throughout the entire year.
by Taylor Vandiver | Feb 25, 2014
So you have alkaline soil… What next?
Throughout the Panhandle, a common problem that often arises is finding a way to raise soil pH. This is due to the fact that we often encounter sandy, acid soils in this region. An often overlooked issue is explaining the process of gardening in a soil that tends to be more alkaline in nature.
Soil pH is measured using a scale from 0 to 14. On this scale, a value of 7 is neutral, pH values less than 7 are acidic, and pH values greater than 7 are alkaline. Soil pH directly affects the growth and quality of many landscape plants. Extreme pH levels can prevent certain nutrients from being available to plants. Therefore, a high pH may make it difficult to grow certain plants.
Often alkaline soils occur in the home landscape as a result of calcium carbonate-rich building materials (i.e., concrete, stucco, etc.) that may have been left in the soil following construction. Soils that contain limestone, marl or seashells are also usually alkaline in nature. There are a few measures that can be taken in order to combat high pH. Incorporating soil amendments containing organic material is the most common method implemented to reverse alkalinity. Peat or sphagnum peat moss is generally acidic and will lower pH better than other organic materials. Adding elemental sulfur is another common practice. A soil test will need to be performed often in order to add the correct amount of sulfur to reach an optimal pH level.
Lowering the pH of strongly alkaline soils is much more difficult than raising it. Unfortunately, there is no way to permanently lower the pH of soils severely impacted by alkaline construction materials. In these circumstances, it may be best to select plants that are tolerant of high pH conditions to avoid chronic plant nutrition problems.
Some plants that will tolerate alkaline soils:
-
Shrubs
- Glossy Abelia (Abelia Xgrandiflora)
- Sweet Shrub (Calycanthus floridus)
- Flowering Quince (Chaenomeles speciosa)
- Burford Holly (Ilex cornuta ‘Burfordii’)
- Indian Hawthorne (Rhaphiolepis indica)
Firebush is wonderful butterfly attractant. Photo courtesy of UF/IFAS.
-
Perennials
- Larkspur (Delphinium carolinianum)
- Pinks (Dianthus spp.)
- Firebush (Hamelia patens)
- Plumbago (Plumbago ariculata)
Zinnias come in a variety of colors, shapes and sizes. Photo courtesy of UF/IFAS.
-
Annuals
- California Poppy (Eschscholzia californica)
- Zinnias (Zinnia spp.)
- Cosmos (Cosmos bipinnatus)
by Alex Bolques | Feb 4, 2014
Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database / USDA SCS. 1991. Southern wetland flora: Field office guide to plant species. South National Technical Center, Fort Worth.
Found throughout the North Florida Panhandle, the American snowbell, Styrax americanus, is a native small flowering tree. In his book, The Trees of Florida, Gil Nelson describes the blossoms as charming with “the thin, reflexed (flower) petals curve back over the flower base, leaving an attractive mass of yellowish stamens protruding from the star-shaped corolla”. It has dark green deciduous foliage, with the tree reaching up to 16 feet in height. The attractive blooms appear April – July.
Considered as an understory tree, American snowbell grows best in wet partially shaded areas and is somewhat tolerant of full sun. It prefers wet places such as swamps, wet woods, edges of cypress ponds and moist to wet, cool, acid sandy to sandy loam soils. Wet areas of the home landscape where water puddles occur provide adequate growing conditions for the American snowbell.
Wildlife benefits include nectar for bees and butterflies and edible fruit for birds. To try American snowbell in the landscape, check with local native plant nursery or search online. Note: other Styrax species can be found online that are non-native.
Other source: The Native Plant Database
