As an extension agent, I’m always curious of what plants folks are using in the landscape. One plant I’ve been noticing more and more of in north Florida, both in containers and in landscape beds, is asparagus fern. Three different plant species go by the name asparagus fern – Sprenger’s fern (Asparagus aethiopicus), foxtail fern (Apsaragus densiflorus), and lace fern (Asparagus setaceus). Property owners should refrain from selecting these plants since they are another example of invasive, exotic species that can spread to natural areas and effect native plant communities.
Native to South Africa, Asparagus species are technically not a fern, but related to lilies, and, yes, asparagus. Its ease of growth has made them a go-to choice for gardeners looking for a hardy, attractive plant. Unfortunately, the red berries that follow the small, white, scented flowers are fed on and spread by birds. The seeds germinate easily and can become established in other parts of the garden or, even worse, a local natural area. The ability of Sprenger’s fern to spread into and disrupt natural ecosystems has earned it a spot on the Florida Exotic Pest Plant Council’s List of Invasive Species as a Category I invasive plant. Category I plants are reserved for those plants that have been documented as causing ecological harm to Florida’s ecosystems. Foxtail fern and lace fern should also be used with caution.
Asparagus fern in a storefront planter. Photo Credit: Mark Tancig.
Birds can carry the red berries near and far. Photo Credit: Mark Tancig.
To remove asparagus fern from the landscape, manual or mechanical removal can be effective for small areas. Be careful to dig up all roots. For larger areas, the use of a dilute glyphosate herbicide product will provide control. Retreatment may be necessary.
If you’re looking for other alternatives to asparagus fern, try these Florida-Friendly alternatives: Coastal sunflower (Helianthus debilis), coontie (Zamia pumila), Coleus (Plectranthus scutellarioides), or Cast Iron plant (Aspidistra elatior).
Dark red flowers of Florida red anise arrive in the springtime. Photo credit: Mary Derrick, UF/IFAS Extension.
Springtime brings small but very pretty red blooms on an outstanding native shrub/small tree, Florida red anise (Illicium floridanum). It occurs naturally in the wild in the central and western panhandle of Florida and west along the gulf coast into Louisiana. Its natural environment is in the understory along streams and in rich, wooded areas.
This is a great shrub for a part shade to shady and moist area in your landscape. The dense foliage, dark green leaves and the fact that it is evergreen all year makes it a great choice for an informal hedge. Plan for it to grow to a maximum height of 12 to 15 feet.
Dense growth habit of Florida red anise. Photo credit: Mary Derrick, UF/IFAS Extension.
The leaves have a licorice-like aroma when crushed but this is NOT the species that gives us the edible culinary anise. Maybe it is that aroma that makes this a relatively pest-free plant!
Yellow anise (Illicium parviflorum) is a very similar native shrub but has small yellow flowers and adapts better to a drier environment. The native range of the yellow anise is north central Florida.
Monarch butterfly on dense blazing star (Liatris spicata). Beverly Turner, Jackson Minnesota, Bugwood.org
The Florida panhandle has a treasure of native wildflowers to enjoy in every season of the year. In the late summer and fall, blazing star, also commonly known as gayfeather, can be found blooming in natural areas and along roadsides. You can also add it to your landscape to provide beautiful fall color and interest year after year.
Blazing star is a perennial that is native to scrubs, sandhills, flatwoods and upland pines; this makes it a tough plant that can endure drought conditions once it is established. It is ideal for a low-maintenance landscape and is a perfect addition to a butterfly or pollinator garden. The butterflies and bees love it!
This beauty grows tall and slender so it is best when planted in masses for an impressive display. This lankiness can result in lodging, or falling over, when the blooms get too heavy but this can be alleviated when grown in masses or with other wildflowers that can support them. The spent flowers will provide your garden with more seed for future years and form a larger colony.
Chapman’s Blazing Star (Liatris chapmanii). Photo credit: Mary Derrick, UF/IFAS.
The home gardener can add blazing star as potted plants or by seeding directly into the soil in October in north Florida. Seeds are available from numerous online sources. Before you purchase, however, make sure that the species you select is a Florida native!
Saltbush seed in “bloom” stands out in a salt marsh dominated by black needlerush. Photo credit: Zach Schang, FDEP
In the spring and summer, no one notices the little green shrub hidden among wax myrtle and marsh elder at the edge of the salt marsh. However, if I’m leading a group of students or a Master Naturalist class through the same area in the fall, it’s the first plant people ask about. The saltbush or groundsel tree (Baccharis halmifolia) blooms dramatically in late September and October, with feathery, dandelion-like white “flowers” on female plants. These seeds are dispersed far and wide by the wind. Male plants typically grow side-by-side with females, and produce yellowish, tubular blooms at the same time. Characterized as both a large shrub and a small tree, the saltbush typically branches from multiple trunks and ranges in height from 2-10 feet. The leaves are rough to the touch and slightly succulent, enabling the plant to hold onto moisture in the sandy, hot environments on the uphill edges of wetlands in which it thrives.
The leaf of Baccharis angustifolia is narrower than B. halmifolia. Both are succulent, enabling the plants to hold on to moisture in a salty environment. Photo courtesy Shirley Denton, Florida Plant Atlas.
The leaf of Baccharis halmifolia is lobed and wider than B. angustifolia is narrower. Both are succulent, enabling the plants to hold on to moisture in a salty environment. Photo courtesy Forestry Images.
The plant is often confused with its near relative, false willow (Baccharis angustifolia), which is typically co-located with saltbush in coastal wetlands. It also blooms white in the fall, but can be differentiated by its slender, almost needle-like (but also succulent) leaves.
Saltbush is not typically used in the home landscape, as some people are allergic and the seeds are poisonous if ingested. Properly planted, however, it is a perfect addition to a butterfly garden because the male plants’ fall flowers provide nectar to numerous butterfly species, including the monarch. Another ideal location for saltbush would be a rain garden or the edges of a stormwater pond. Coastal property owners on the bay or Gulf would find it an excellent addition due to its tolerance of the year-round salt spray. The species is very hardy–tolerant of both wet and dry soils–along with a variety of soil pH levels. Plant saltbush in full sun with at least 3-5 feet between young plants.
For additional information on the characteristics of saltbush, please see the UF publication, Baccharis halmifolia Saltbush, Groundsel Bush and check out this entertaining video from our Lee County colleague, Stephen Brown, as he immerses himself in a stand of saltbush.
Bee visiting Monarda punctata. Photo: J. McConnell, UF/IFAS
If you are looking for a late summer blooming plant that attracts pollinators and survives in a tough spot, dotted horsemint (Monarda punctata) is for you! This native plant thrives in sunny, well-drained sites but will also tolerate moist garden spots. It grows quickly and blooms prolifically – attracting pollinators by the dozens. A plant covered in blooms is very showy and when you go in for a closer look, you’ll see unique flowers.
Dotted horsemint brings color to the summer garden. Photo: J. McConnell, UF/IFAS
This plant can get 3 feet tall by 4 feet wide but it is tolerant of pruning in the growing season to keep it tidy and encourage bushiness. Just be sure to prune it before it sets flowers, a good rule of thumb is to prune before the end of June.
Propagation is by division or seed. Few pests affect dotted horsemint.
