by Matt Lollar | Aug 1, 2019
Large patch Rhizoctonia solani (known as brown patch in cool season grasses) is a common disease of many turfgrass species. It usually occurs during the cooler months from October through May when temperatures are below 80 degrees Fahrenheit. However, signs and symptoms of large patch and other Rhizoctonia diseases can be observed throughout the summer. Less common Rhizoctonia species that occur during the summer months are Rhizoctoni zeae and Rhizoctonia oryzae. Extended periods of turf wetness from excessive rainfall or overwatering provide ideal conditions for the disease to develop and spread.
Rhizoctonia in a zoysiagrass lawn. Photo Credit: Matt Lollar, University of Florida/IFAS Extension – Santa Rosa County
This summer in Santa Rosa County, Rhizoctonia has been positively diagnosed in both St. Augustinegrass and zoysiagrass lawns and suspected in a number of centipedegrass lawns. The disease usually starts as small, yellow patches (about a foot in diameter) that turn reddish brown, brown, or straw colored as the leaves start to die. Patches often expand to several feet in diameter. It is common to see rings of yellow or brown turf with otherwise healthy turf in the center. The fungus infects portions of the blades closest to the soil, eventually killing the entire leaf. Grass blades can easily be pulled off their stems, but roots are not affected by the disease.
Rhizoctonia in a St. Augustinegrass lawn. Photo Credit: John Atkins, University of Florida/IFAS Extension – Santa Rosa County
Overwatering and excessive fertilization can both contribute to the development of Rhizoctonia disease. Improper timing of fertilizer application can also promote disease development. In the Florida Panhandle, turfgrass is actively growing from April to October. Slow-release fertilizers are recommended to allow for a more even distribution of nutrients over the course of multiple months. Recommended fertilizer rates are based on turfgrass species, geographical location, and fertilizer analysis. Please refer to the UF/IFAS Publication: “Urban Turf Fertilizer Rule for Home Lawn Fertilization” for rate recommendations.
Chart excerpted from Florida-Friendly Landscaping publication.
If large patch or another Rhizoctonia disease is confirmed in your lawn, then chemical controls are necessary to keep the disease from spreading. Fungicide products containing the active ingredients azoxystrobin, chlorothalonil, fludioxonil, flutolanil, iprodione, mancozeb, metconazole, myclobutanil, polyoxin D, propiconazole, thiophanate-methyl, thiram, triadimefon, trifloxystrobin, or triticonazole are viable options for keeping the disease from spreading. For best results, follow the fungicide label for application instructions. It’s important to not only treat the affected areas, but also the healthy turf surrounding these areas in order to keep the diseased spots from growing in size.
Unfortunately, turf diseases are often not noticed until large patches of declining and dead turf are noticed. In these cases when large dead patches exist in the lawn, it is usually necessary to resod these areas. As with most problems that arise in the landscape, good cultural practices are the most proactive way to mitigate the chances with turfgrass diseases. The UF/IFAS Florida Friendly Website provides up-to-date solutions and recommendations for caring for Florida landscapes.
by Matt Lollar | Apr 9, 2019
The Evidenced-Based Zoysiagrass Management Workshop is returning to Milton on April 23 at the University of Florida – Milton Campus. Attend to get updates on managing zoysiagrass and to earn CEUs. Register at: UF/IFAS Evidence-Based Zoysiagrass Workshop
by Daniel J. Leonard | Sep 25, 2018
Florida is known for many things, however sweeping vistas of hillsides covered in the orange, red, and yellow foliage of fall is not one of them. Our long, hot summers and short, cool (not cold) winters, and lack of anything of substance resembling a season in between, precludes the fall color show our neighbors to the north enjoy. Don’t settle for synthetic Halloween decorations or faux painted leaves to add festivity to the autumn landscape design. When football season kicks off and summer blooming annuals begin to fade, it’s time to reach into the horticultural toolbox and pull out a couple fall-y Florida Friendly annual foliage species, perfect for the balmy Panhandle “autumn”: ‘Alabama Sunset’ coleus and ‘Petra’ croton.
‘Alabama Sunset’ Coleus in mixed container – Photo Courtesy Andrea Schnapp
The first plant to consider when looking for outstanding heat tolerant foliage is the common coleus (Solenostemon scuttellarioides), particularly the cultivar ‘Alabama Sunset’. As the name indicates, ‘Alabama Sunset’ offers leaves in shades of red and yellow, perfect for designing fall containers or mixing into planting beds. This popular summer annual is known for its ability to add interesting color and texture to shady areas.
Recently with the arrival of the ‘sun coleus’ series (to which ‘Alabama Sunset’ belongs), coleus is permissible in situations with greater sunlight. Coleus is incredibly easy to grow and easy to find since nearly every nursery stocks at least a few cultivars. What’s more, these plants are generally free of pests and disease problems! Even sun coleus does appreciate a little protection from the hot afternoon sun and occasional deadheading of flowers.
‘Petra’ Croton. Photo courtesy Daniel Leonard.
The second plant in the fall foliage arsenal is ‘Petra croton’ (Codiaeum variegatum ‘Petra’). Primarily known as a tropical foliage or indoor houseplant, Petra croton is criminally underused in fall landscape and container design. Petra croton sports bold magnolia-sized leaves striped with colors of yellow, red, orange, and black. A great Halloween plant to complement those front-porch Jack-O-Lanterns!
Like coleus, Petra croton is extremely easy to grow either in a container or in the ground. It should be located in either in full sun or partial shade and watered through establishment. Otherwise, this species is quite drought tolerant and can be killed with kindness if watered too frequently!
Although croton is a perennial shrub in the tropics, in Northwest Florida it may be killed by frost and best treated as an annual. Croton can be expected to reach 30-36” in height in a single season, its size and the boldly colored foliage make it a true focal point in the autumn landscape!
Appalachian-grade fall color may be unattainable in the Panhandle in the literal sense, but with these novel plant selections the autumn mood may be present even as the emerald waves hit the sugar white sand. By using annual foliage plants that possess traditional fall colors throughout their life cycle, anyone can add a splash of Autumn to their mixed containers or landscape beds. ‘Alabama Sunset’ coleus and ‘Petra’ croton are the perfect match for this time of year, pairing ease of culture with bold, seasonal color. Plant a couple today!
by Julie McConnell | Sep 25, 2018
Finding professional landscape services for your home or business can be difficult. Unlike many skilled trades in Florida, landscapers/groundskeepers are mostly unregulated. No state exams exist to determine mastery of the basic skills required to perform lawn or landscape maintenance. Ultimately, consumers are left on their own to determine who to hire.
As UF/IFAS Extension Agents, we cannot endorse or provide referrals to companies; however, we can offer some guidance to help you with your search for qualified professionals.
- Be an informed consumer. You don’t have to be an expert in landscapes. Instead you should have an idea of what you envision for your landscape. Familiarize yourself with the type of turf grass and plants you want and learn what the basic maintenance is for their upkeep.
The Florida Friendly Landscaping™ program is a great place to start. Most Extension offices have free books on how to care for Florida landscapes. Or you can find online resources at www.floridayards.org
- Fertilizer and pesticide applications DO require state certifications.
Commercial landscape fertilizer applicators must obtain state certification.
- Fertilizer applicators for hire must maintain the Limited Urban Fertilizer Applicator Certification (Chapter 482.1562, Florida Statutes). Each applicator must have an individual certification. No one can “work under” another applicator’s certificate.
- Pesticide applicators (any substance applied with the intent to kill or inhibit growth of weeds, insects, nematodes, fungi, bacteria, etc.) have two options depending on application site and qualifications.
- Residential or commercial building turf pesticide applicators must hold the Commercial Lawn & Ornamental Pest Control License or be a current Employee Cardholder of the Certified Pest Control Operator
- Residential or commercial ornamental beds (trees, shrubs, flowers) pesticide applicators can hold either Commercial Lawn & Ornamental, as above, or Limited Commercial Landscape Maintenance Certification
- You can check to see if the applicator has a current certification by visiting http://aessearch.freshfromflorida.com/PersonSearch.asp You must enter the applicator’s legal name (name listed on his driver’s license, no nicknames) or their certification number (this will start with two letters)
- Ask about affiliations with professional organizations. Although landscapers are not required to obtain state certifications (excluding fertilizer and pesticide applicators), many take the extra steps to increase knowledge and keep up with industry standards and trends. Voluntary participation in organizations such as Florida Pest Management Association (FPMA), Florida Nursery, Growers and Landscape Association (FNGLA), Florida Turfgrass Association (FTGA), Tree Care Industry Association (TCIA), International Association of Arboriculture (ISA), etc. Some of these groups offer certification programs for professionals to help them increase knowledge.
- Word of mouth/observation. If you see a landscape that looks good, ask who they use and if they are pleased with their service. Talk to friends and colleagues for recommendations.
- Check references. Always ask for references and contact them. Yes, they may only give you the names of happy clients, but you can still ask questions to get a feel for the type of service offered and assess the longevity of the company.
Landscape professionals looking for certification classes should visit Green Industries in the Panhandle Upcoming Events page. 
by Matt Lollar | Jun 21, 2018
Are you interested in growing squash in your garden? Do you know the difference between summer squash and winter squash? Check out this very informative instructional video on growing squash in your home garden by Walton County Agriculture Agent Evan Anderson.
[youtube https://www.youtube.com/watch?v=hlbJfV-0FuU&w=560&h=315]
by Matt Lollar | Feb 14, 2018
Register today for the 2018 Panhandle Fruit & Vegetable Conference! The Panhandle Fruit & Vegetable Conference is scheduled for February 19th & 20th. On the 19th we will go on an afternoon farm tour in Baldwin County, AL that will end with dinner (included) at Auburn University’s Gulf Coast Research and Extension Center in Fairhope. Educational sessions with guest speakers from University of Florida, Auburn University, and Texas A&M University will be held on February 20th where topics will include Citrus Production, Vegetable Production, Protected Ag Production, Marketing/Business, Food Safety, and Fruit & Nut Production. A full list of topics can be found here. Fifty dollars (plus $4.84 processing fee) covers the tour and dinner on the 19th and educational sessions, breakfast, and lunch on the 20th! The complete agenda is now available. Use your mouse or finger to “click” on the image below for full screen viewing.
Make sure to register by Wednesday, February 14th! – Registration Link
