by Larry Williams | Apr 29, 2020
In times like these, it seems that our own perceived “problems” pale in comparison to the “big picture.” In my day-to-day work, I have the opportunity to help people solve problems with their landscapes, lawns and gardens. I enjoy the problem solving part of my job as an extension agent.
Winter annual weeds in lawn in early spring. Photo credit: Larry Williams
You’d be surprised how upset some people can be about a few weeds, a dying petunia or a tomato with a crack in it. They’ll let small things like this upset their entire world. It’s as if they think we live in a perfect world when it comes to expectations for the plants in their own landscape.
It has become apparent to me that too many people spend too much time letting too many small things bother them too much.
When my twin sister, Linda, and I were growing up in a small town in middle Georgia, an elderly couple (Mr. and Mrs. Hunt) would crack pecans and give the shelled halves to us to eat. They’d hand the shelled pecans to us over the fence that separated our yards. At five or six years old this was a treat for my sister and me.
I remember their landscape. I remember Mrs. Hunt sweeping their dirt driveway lined with coconut sized rocks. She used handmade brooms. I remember their pink flowering dogwoods in spring. I remember their old-fashioned yellow and orange daylilies during summer. I remember the fascination of seeing red spider lilies seemingly come from nowhere in the fall underneath deciduous trees as they displayed their autumn colors. I remember Mrs. Hunt letting me smell a flower from a sweetshrub plant, which reminded me of sweet apples. The deep red blooms and dark green leaves of this shrub complemented the white wooden wall on the east side of their home.
Mulberry tree with fruit. Photo credit: Larry Williams
I remember climbing a large mulberry tree in their backyard and picking and eating the berries. I remember watching Mr. Hunt prune grapevines growing on an overhead trellis. I remember learning about the history of a ginkgo tree planted just outside a chicken pin in their side yard. I remember watching hummingbirds flying in and out of the reddish orange funnel-shaped blooms of a large trumpet vine growing on an old metal frame of a water tank.
I don’t remember the weeds, even though I know there must have been weeds in the Hunt’s landscape. I know there was the occasional pecan that didn’t fill out or that was worm infested. And I’m sure an occasional plant had to be replaced. But these are not the things that made lasting impressions for me.
The big picture is not the weeds, the dying petunia plant or the pecan with a worm in it. Sure you will have weeds in your yard and certain plants that don’t survive. Just don’t let these things become the source of worry. In my opinion, a landscape should be a source of pleasure, a place to learn and a place to pass along lasting memories. Besides, with all the things there are to worry about in this world (as recent days have revealed), why let your own backyard be one of them?
by Beth Bolles | Apr 29, 2020
Escambia County Master Gardener Volunteer Carol Perryman shares information to help choose and grow lavender in the herb garden.
If you want to grow lavender in our hot & humid climate you must follow a few considerations which can be “do or die” rules. Will your lavender be an annual or a perennial? Hybridizers are always busy at work but, in the meantime:
Choose the right variety. (English lavender cannot easily be grown in our climate.)
1.Spanish Lavender- Lavandula stoechas- 18 to 24” tall, lighter scent, early bloomer & long blooming, drought & heat tolerant, good for mild winters, gray/green foliage, magenta-pink flowers with purple bract shaped like a pineapple with bunny ears.
2.’Goodwin Greek Gray’ Lavandula dentata x L. lanata – 2 to 3 feet tall & wide, silvery/gray toothed edged leaves, short spikes of deep purple to blue blooms, heat & humidity tolerant, good to 15 degrees F in winter,
3.French Lavender- Lavandula dentata -3 feet tall, lighter scent, summer bloomer & long blooming, heat tolerant (Protect from frost.), narrow gray & green leaf varieties, “dented” lavender colored flower buds that make up flower head/bract.
4. Sweet Lavender- Lavandula heterophylla – Tolerant of heat & humidity & cold tolerant to 15 degrees F. 1 1/2 to 2 feet tall, gray/green leaves &bright lavender flowers. Allow to dry between watering.
5. ‘Phenomenal’ Lavandula x intermedia – This is a newer evergreen hybrid developed for extreme heat or cold. It is disease resistant, tolerates our humidity, 24” x 32” high & wide with blue to purple blooms and gray/green leaves.
Lavender in the Escambia County Extension herb garden. Photo by Beth Bolles, UF IFAS Extension Escambia County.
Choose your site well or consider growing in pots.
1. LIGHT – Full sun.
2. DRAINAGE – Focus on drainage. MUST be well-draining site or pot or modified to be so.
3. SOIL – Loose almost neutral soil.
4. AIRFLOW – Focus on air circulation which will help dry off the leaves after rain. Space appropriately.
5. WATER – Focus on water source. Lavender does not like to be watered overhead. A dripline
is best or water by hand around roots, not on leaves. Check water requirements for your chosen variety.
6. MULCH- Whether in the ground or in pots, use light-colored gravel or small rocks as mulch
to help reflect sunlight & heat to help keep foliage dry. Heat & light reflected off a nearby brick, stone, or stucco wall, help keep foliage dry too.
7. ACCESS- Must be able to deadhead & prune. Lavender only blooms on new growth. In our climate it should be pruned back about 1/3 of it’s height & shaped to keep the mound-like shape in early January unless we have an extremely cold winter. If so, then early spring. You can prune lightly after deadheading spent blooms to promote new growth throughout bloom season. Add 1 inch of composted materials around plant each spring or lightly fertilize with slow time-release fertilizer. Do not over fertilize. Lavender doesn’t need much fertilizer.
Lavender may grow best for you in a container. Photo by Beth Bolles, UF IFAS Extension Escambia County.
If you are new at growing lavender, try pots. You could try several varieties in different locations to better understand which conditions & locations will work best in your garden. The beauty of pots is their portability. If one location doesn’t work, you can move the pot.
All lavender is edible. You can use the leaves or flowers, fresh or dried. Fragrant lavender is a wonderful addition to your garden although in our climate, most lavenders are not going to be long lived. If you have found “the spot” in your own little microclimate & your lavender thrives year after year, consider yourself lucky.
by Gary Knox | Apr 23, 2020
Article by Dr. Gary Knox, Professor of Environmental Horticulture at the UF/IFAS NFREC Quincy
Introduction
Rhizomatous begonias are a large group of Begonia species, hybrids and selections characterized by large, sometimes-colorful leaves arising from thick rhizomes that grow along the soil surface. White or pink flower clusters that appear in late winter and spring are an extra bonus with these plants. Some types can be used in north Florida as herbaceous perennials that add bold leaf texture and color as well as flowers to shady gardens.
Begonia mass planting
Common rhizomatous begonias such as Begonia nelumbiifolia, ‘Erythrophylla’ (“Beefsteak”), and ‘Ricinifolia’ have long been grown outdoors in south and central Florida gardens as herbaceous perennials. North of these areas, rhizomatous begonias were considered cold sensitive and thus used strictly as pot-grown plants grown indoors or protected over winter. Nonetheless, north Florida trials testing the performance of outdoor, in-ground plantings started in Tallahassee and Gainesville as long ago as the late 1980s and early 1990s. With the proven success of some rhizomatous begonias in north Florida, interest in these plants increased rapidly in the early 2000s. Since then, savvy north Florida gardeners have been delighted by the possibility of using rhizomatous begonias as interesting herbaceous perennials for the shade garden. While temperatures below freezing can damage or kill leaves, these plants will usually produce new leaves from the rhizomes once warmer temperatures return in spring.
Plant Description Under North Florida Conditions
Leaves of rhizomatous begonias are this plant’s most distinctive feature and are why this group is so appealing to gardeners. Leaves often are large, from a few inches wide to almost 3 ft. in diameter (as reported for the cultivar ‘Freddie’ under the right conditions). Leaf shape may be rounded, star-shaped or irregularly edged, and leaf colors include burgundy, red, bronze, chartreuse, silver, and various shades of green including one so dark as to be almost black. Many types have leaves displaying patterns of one or more colors and some have silver or red markings. Undersides of leaves are often burgundy-colored, and leaf stems (petioles) also may exhibit colors other than or in addition to green. Leaves may be smooth, textured, or fuzzy-appearing due to large numbers of sometimes conspicuous hairs. Some types have leaves with an interesting three-dimensional spiral located on top of the leaf where the leaf blade attaches to the stem.
Begonia ‘Big Mac’ foliage
Rhizomatous begonia rhizomes are thickened, fleshy stems 1 to 2 in. or more in diameter that grow, branch and spread horizontally at or just below the soil surface, often in the mulch or leaf duff. Adventitious roots develop along the rhizome, and dormant buds embedded in the horizontal stem can be stimulated to grow new leaves after damage, stress or when divided. With age, as rhizomes grow outward, the oldest part of the rhizome will stop producing leaves and eventually die.
The rhizomes contain water and food reserves that allow this type of begonia to survive environmental stresses like drought as well as leaf loss or damage from cold temperatures. Shoots and roots can grow from the rhizome even if leaves and roots are killed or damaged.
Flowers occur in late winter to spring, depending on the species, cultivar and weather, and are quite showy on some selections. Flowers typically are white to various shades of pink and occur in a cluster (technically called a cyme) held above the foliage, in some cases dramatically high above the foliage. Individual flowers may range in size from 3/8-inch to over 2 inches at their widest point and a flower cluster may contain a few to over 120 individual flowers, depending on selection and growing conditions. A mature rhizomatous begonia may have an extended period of flowering, providing weeks of color. This long floral display results from large numbers of flowers developing sequentially on an individual flower cluster such that new flowers are still forming long after the first flowers have opened. Furthermore, multiple flower clusters appear over an extended time period. Flowers occasionally are pollinated and form winged seed capsules, though seed production and viability are variable. After flowering, the leaves remain a point of interest in the garden due to their size, lush appearance, interesting shapes and colorful patterns.
Cultural Requirements, Use and Maintenance
Rhizomatous begonias grow best in light shade or indirect light but can tolerate morning sun. Plants thrive in rich, organic, well-drained soil that is moist but not wet. A layer of organic mulch or leaf litter often is enough to provide basic conditions for growth in most soils if they are well-drained. Accordingly, organic mulches or leaf litter should be applied regularly around plants. Fertilizer stimulates growth but decomposing organic mulches can provide adequate nutrients, except perhaps with poor or sandy soils.
Newly planted begonias should be watered regularly. After establishment, most rhizomatous begonias benefit from regular watering but only require irrigation during periods of drought or extended dry weather.
An individual plant makes an attractive specimen plant in a container or in the garden. With time, a rhizomatous begonia can spread and, in the garden, develop into a patch. Alternatively, planting large numbers of the same rhizomatous begonia can create a very dramatic garden border, mass planting, or groundcover, especially in spring when all plants are flowering. To achieve this effect more rapidly and with smaller numbers of plants, tips of rhizomes can be pruned to stimulate rhizome branching and result in a denser plant or patch. Rhizome tip pruning should be done after plants finish flowering. Plants can be divided and moved easily since only the rhizome is needed to establish a new plant, but this should occur after flowering and early in the growing season so plants have long enough to establish before cold weather.
For aesthetic purposes, dead or damaged leaves may be removed as needed but especially after frosts and hard freezes. Similarly, leaves that overwinter often become “ratty” in appearance with time and may be removed without affecting plant growth.
Potential Problems
Rhizomatous begonias have few pests or other problems. Mealy bugs can occasionally infest plants. As with other large-leaved plants, wind or physical contact can tear and damage leaves. In north Florida, winter frosts and freezes can damage and disfigure leaves or kill leaves entirely, causing them to lose structural integrity and collapse, appearing mushy. Foliage may be protected during cold weather by frost cloth, sheets or other typical cold protection strategies, though heavy coverings could themselves damage leaves.
Rhizomes themselves usually survive cold weather because they are insulated from low temperatures by being half-buried in the ground and/or being covered by mulch. Adding mulch regularly to rhizomatous begonia plants will provide increased freeze-protection. Also, their typical planting location under tree canopies protects plants from a radiation freeze. Soil drainage is a more important factor for rhizomes since wet soil conditions could lead to rot, particularly in winter.
Common Types and their Descriptions Under North Florida Conditions
With hundreds of species and thousands of cultivars and hybrids, rhizomatous begonias can be overwhelming. Many rhizomatous begonias look alike and even experts have difficulty distinguishing species and cultivars. Many grown in north Florida have their origins in Mexico, Central and South America, though the Begonia Family is huge and species are found nearly world-wide.
Begonia heracleifolia
Technically rhizomatous begonias include Rex begonias, a group derived from Asian native, Begonia rex, and known for their especially colorful leaves. However, most Rex begonias do not grow well in Florida’s heat, high rainfall and high humidity, and so these begonias are excluded here.
Begonias listed below represent types that have proven resilient and usually cold hardy in north Florida USDA Cold Hardiness Zone 8b.
Species:
Begonia heracleifolia: The species boasts star-shaped leaves up to 6 in. across on stiff, hairy, thick leaf stems (petioles) up to 5 in. long. Each of the pointed leaf lobes is edged in dark green and has a chartreuse stripe along the central midrib, adding contrast. Spectacular sprays of pale pink flowers appear in late winter in clusters measuring 3 ½ in. by 4 ½ in. on 6-in. flower stalks (pedicels). Each cluster contains about 30 or more flowers, each about 1 in. across. As the season goes on, foliage gets showier and showier. It often dies down after winter freezes but re-emerges in late spring.
Begonia nelumbiifolia
- nelumbiifolia: This cold hardy begonia is known for its exceptionally large, water lotus-shaped leaves, creating a stunning specimen. Individual leaves can grow as large as 18 in. by 14 in. on leaf stems as long as 36 in. but 12 in. by 9 in. leaves are more typical. As temperatures warm, new developing foliage continues to get bigger, growing into very large leaves by fall. There also is a form in which the medium green leaves have red veining. White flowers are displayed above the foliage in mid to late spring in airy clusters measuring 7 ½ in. to more than 12 in. across on stems up to 48 in. tall. Clusters may contain as many as an astounding 120 flowers, each about ¾ in. across at its widest point.
2. popenoei: Huge rounded leaves with red veins and undersides make this a specimen plant which can grow to 3 ½ ft. tall and wide. Hardy with protection, it throws up tall stalks with clusters of white flowers in late winter.
Cultivars:
“Beefsteak”: This catch-all name refers to the original beefsteak begonia, ‘Erythrophylla’, as well as many derivatives that look similar. Beefsteak begonias characteristically have rounded leaves with a glossy green to bronze top surface and reddish undersides. Leaves range in size from 4 to 7 in. in diameter, and flower clusters are on stems up to 18 in. tall. ‘Erythrophylla’ was developed in 1847 and is considered a tough, vigorous plant, hence the common name, “beefsteak”. Given the long history and vigor, ‘Erythrophylla’ and derivative beefsteak begonias have long been shared as pass-along plants, world-wide as potted plants and later as an in-ground Florida garden plant. One type has ruddy, evergreen leaves and long-lasting, bold pink flower clusters. The scalloped 4-in leaves are on short 5 ½ in. reddish leaf stems but are most notable for remaining undamaged by temperatures down to the mid 20s °F, long after all other begonias’ leaves have turned to mush. Mid spring finds this plant topped by numerous clusters of dark pink flowers, with the display lasting 6 weeks or more. Individual clusters are about 8 in. by 5 in. on flower stems about 12 in. tall. Each cluster contains about 20 flowers each about ¾ in. wide at its widest point.
Begonia ‘Big Mac’ in flower
‘Big Mac’: This is a large, vigorous plant with enormous star-shaped leaves having reddish undertones and red leaf stems. The plant grows about 3 ft. tall and 2 ft. wide. Individual leaves may grow up to 18 in. wide on 16-in. leaf stems but typical leaves on younger plants are 10 in. to 12 in. wide. Individual white flowers are an amazing 2 in. wide at their widest point in clusters measuring 7 in. by 12 in. and containing about 75 flowers. Cold winters will knock it to the ground, but this begonia re-emerges again in late spring. This plant was hybridized in 1982 by Paul P. Lowe in Lake Park, Florida.
‘Joe Hayden’: This begonia features dramatic, dark, lobed leaves with burgundy undersides. Leaves are up to 8 in. long supported by leaf stems up to 9 in. long. In spring, the plant is topped by light pink flowers held high above the foliage. Each cluster measures about 5 in. by 7 in. on flower stems up to 26 in. tall. Each cluster contains more than 100 individual flowers, each about ¾ in. across at its widest point. This selection was hybridized in California in 1953 by Rudolf Ziesenhenne, but many similar selections have been made and are often confused with ‘Joe Hayden’.
Begonia ‘Joe Hayden’
Many other cultivars are common, but other cold hardy types suitable for north Florida include ‘Caribbean King’, ‘Caribbean Queen’, ‘Washington State’ and the catch-all ‘Ricinifolia’ types (with large, castor bean-shaped leaves). New breeding by scientists and enthusiasts promises to deliver many more types of rhizomatous begonias with increased foliage cold hardiness and an expanded range of foliage types and colors. A major Texas nursery introduced a series of rhizomatous begonia hybrids marketed as Crown Jewel Begonia™. The series currently features five patent-pending cultivars that are promoted as landscape plants for Zone 8. Additional breeding work is ongoing in north Florida.
Availability and Propagation
Rhizomatous begonias are available from Internet/mail order nurseries, some American Begonia Society members, other gardening groups, and plant societies. The introduction of trademarked rhizomatous begonias like Crown Jewel Begonia™ show promise for wider availability of rhizomatous begonias from nurseries.
Rhizomatous begonias are easily propagated by division, separation of rhizomes, or by rhizome pieces. When planting, place the rhizome or pieces (as small as 2 in. long) horizontally and half buried in a new in-ground location or in a container with potting soil. As with other begonia species, leaves may be used for propagation, though this method usually takes longer to achieve a size suitable for planting in the garden. Plants can be grown from seeds but production time is similarly long.
References:
American Begonia Society. (2020) https://www.begonias.org/index.htm. Accessed 15 April 2020.
Ginori, Julian, Heqiang Huo, and Caroline R. Warwick. (2020) A Beginner’s Guide to Begonias: Classification and Diversity, ENH1317. Environmental Horticulture Department, UF/IFAS Extension. January 2020. https://edis.ifas.ufl.edu/ep581.
Lowe, Paul. (1991) Growing Rhizomatous Begonias in the Ground in Southern Florida. Begonian 58:89. May/June 1991. https://www.begonias.org/Articles/Vol58/GrowingRhizomatousBegoniasFlorida.htm.
Schoellhorn, R. (2020) Personal communication, Alachua, FL.
Sharp, Peter G. (2011) Down to Earth – with begonias. 111 pp. http://ibegonias.filemakerstudio.com.au/PeterSharp/DownToEarthWithBegonias.pdf.
The International Database of the BEGONIACEAE. (2020) http://ibegonias.filemakerstudio.com.au/index.php?-link=Home. Accessed 16 April 2020.
UF/IFAS Gardening Solutions. (2019) Begonias. http://gardeningsolutions.ifas.ufl.edu/plants/ornamentals/begonias.html.
Watkins, Sue. (2020) Personal communication, Tallahassee, FL.
by Molly Jameson | Apr 15, 2020
During the COVID-19 crisis, many of us have found that we have more time for activities at home. One activity that can be beneficial to your mental and physical health is gardening. Not only will gardening get you moving physically, but simply being outdoors can help you feel more relaxed during these stressful times. By vegetable gardening, you get the added bonus of becoming more self-sufficient by growing your own healthy food.
You can still gather your gardening supplies at local garden centers during COVID-19. Photo by Brenda Buchan.
To grow vegetables successfully, you will need some basic gardening supplies. This includes seeds or seedlings, fertile soil, gardening tools, and irrigation materials. If you are an avid gardener, you may already have these items at your house. But if you are new to gardening – or if you are simply missing an essential item in your everyday gardening arsenal – where do you go?
Thankfully in Florida, industries regarded as essential during these tough times include food, agriculture, and infrastructure support services. This means farmers, farm workers, farmers’ markets, produce stands, food banks, agribusiness support services, and landscaping services can continue to operate.
But for these essential services to operate safely, they still need to follow social distancing principles to protect the health of both their customers and workers. Therefore, many of our agriculture and horticulture industry personnel are finding ways to adapt. Although this involves making many adjustments, operations such as garden centers and plant nurseries are changing how they function to meet the demand of their customers while remaining safe.
Become more self-sufficient by growing your own healthy food in your backyard. Photo by Molly Jameson.
For example, Native Nurseries in Tallahassee has temporarily closed its doors to the public, but they offer pickup and delivery options that are consistent with social distancing guidelines. Customers can either email or call the nursery and provide their contact and billing information, their purchase requests, and specify either pickup or delivery. Pickup orders are placed in a labeled designated parking space for the customer. For a fee, Native Nurseries also offers delivery of purchased items.
If you plan to make a trip to a garden center or plant nursery, call ahead or check the company’s website to learn about its social distancing policies, pickup and delivery options, and any potentially reduced hours of operation.
By continuing to support our local agriculture and horticulture businesses, we can ensure that they can weather this storm and continue to provide us with their essential services long into the future.
So, gather your supplies, stay home, and get your spring and summer vegetable garden growing!
For more information about essential services in Florida, visit: https://www.floridadisaster.org/.
