Monday, April 28, 2014

Figs Slow to Leaf Out?

We've had a lot of calls to the office recently about figs that still have put out no, or few, new leaves. We did have some unusually cold weather this past winter, and UGA's publication "Home Garden Figs" contains this caution about the relative cold-hardiness of figs in Georgia:
"There are many varieties of figs available, but only a few are well adapted to Georgia. If you want to try to grow figs in the mountains, select a protected site and try Celeste or Hardy Chicago. In addition, some varieties such as Brown Turkey will produce some figs on the current season’s growth after being killed to the ground by a freeze."
A Texas A&M webpage that contains Fig FAQs includes this statement:
"Normally we prune figs very little in Texas because of potential cold damage, ie. we usually have to prune back to live wood. This past year our varieties went dormant extremely well. We had a lot of cool, mild days prior to very hard winter freezes. The figs went through this very well and most were in great shape. Then we warmed up in February and the plants lost some of their accliminated dormancy and bam, they froze to the ground in March."
North Carolina State University's Charlotte Glen has this to add:
"The only other problem figs sometimes experience in our area is cold damage. This is more common in particularly cold winters or when extremely cold temperatures follow a stretch of unseasonably mild weather in late winter. It is very rare for figs to be killed completely, though they may have to be cut back to the ground and allowed to re-grow if heavily damaged. Cold damage can be minimized by planting fig bushes against a south facing wall."
The figs in Cobb County have been very slow to leaf out primarily because of the hard freezes that we experienced this winter. Some plants will have been killed back to the ground, while others will just have been damaged partway down the branches.

In the "killed to the ground" scenario, all the dead wood above ground should be removed. Less damaged plants need to have the dead wood pruned away after the extent of the damage is more clear. Since leaves are just now emerging on the plants, waiting another week or two before pruning away large portions of a plant would be prudent.

Tuesday, April 22, 2014

Marigolds for Earth Day

We've had a tray of Marigolds growing in the office for several weeks now, and some of the young plants are beginning to form little flower buds at the top. Even when these plants are full grown, they are going to be small. The catalog from which the seeds were ordered said this about them: "Abundant color on neat, compact 10" plants. Ruffled double flowers in rust, yellow, orange, red and bicolors."

 Marigold seedlings, "Brocade Mix," a French Dwarf variety, Tagetes patula               PHOTO/Amy Whitney
In general, marigolds are attractive to butterflies (which are beautiful, though somewhat patchy in their effectiveness as pollinators), and they can attract some other beneficial insects to your garden. Anyone who stops by the office today, and until the 30 plants are gone, will be offered one of these to take home. Happy Earth Day!

Monday, April 14, 2014

Moving Houseplants Outside for the Summer

One great side-benefit of the advent of warmer weather is the ability to recover some indoor space by moving houseplants outside. What a gift it is to be able to move about the house without having to dodge the spiky branches of a lime tree or the sharp-edged leaves of a mature Dracaena!

UGA Extension Agent Frank Watson points out, though, that indoor plants need time to adjust to the brighter light outdoors. In his GA FACES article "Use care when moving houseplants outside for the spring, summer," he writes, "Moving a houseplant from a relatively dark home into very bright sunshine will cause severe leaf burn."

His recommendation to avoid this outcome, from which plants can take months to recover, is to move indoor plants to a shaded location before shifting plants that thrive in high-light levels into the bright sunshine. Some plants should be kept in the shade throughout the summer.

In Watson's article, Bodie Pennisi, a researcher on UGA's Griffin campus, provides this caution: “Keep in mind, each time a plant is moved around, it will experience an acclimatization period, and such changes may become evident.”

The article contains the recommendation to wait until plants have had a chance to adjust to their new surroundings before beginning to give them fertilizer at the rate recommended on the package (this will vary according to the brand and type of fertilizer chosen).

For the complete article, click on the linked title in the text above.

Wednesday, April 2, 2014

Upcoming Events and Classes


Garden to Table
Thursday, April 3, 6:00 – 8:00 p.m. Horticulture Agent Neil Tarver and Family and Consumer Sciences Agent Cindee Sweda will present a class about growing and then using food crops. UGA Extension/Cobb County, second floor, 678 South Cobb Drive, Marietta, GA, 30060. Preregistration is required; $5 fee for class and materials. Call 770-528-4070 for information and to register.

Bluebird Trail Tour
Tuesday, April 8, 10:00 a.m. Free and open to the public. Cobb Master Gardener and Bluebird expert Jim Bearden will conduct a guided walk of the 2.3-mile Bluebird Trail at Green Meadow Preserve Park, at 3780 Dallas Hwy., Powder Springs, GA, 30127. Follow the Bluebird Trail blog at bluebirdtrail.blogspot.com.

Growing and Cooking with Herbs in Georgia
Tuesday, April 8, 6:00 – 7:30 p.m. Free and open to the public. Join UGA Extension in Cobb County staff for a timely class on planting and maintaining herbs, pruning and harvesting techniques, and using the herbs after the harvest.  Class will be held at the Training Room of the Cobb County Water lab, 662 South Cobb Drive (at the intersection with Atlanta Rd.). For information and to register for the free class, call 770-528-4070.

Moving Toward Organics in the Vegetable Garden
Tuesday, April 8, 7:00 – 8:00 p.m. Free and open to the public. Learn what organic gardening and farming really means and steps you can take to have a more environmentally friendly garden.  Presented by Amy Whitney, of UGA Extension/Cobb County, as part of the ongoing Gardeners Night Out presentation series of the Master Gardener Volunteers of Cobb County, at Mountain View Regional Library, 3320 Sandy Plains Road, Marietta.

FACS Family Fun Fair
Thursday, April 10, 5:30 – 7:30 p.m. Free and open to the public. Join UGA Extension in Cobb County’s Family and Consumer Sciences group for some family fun. There will be cooking demonstrations, bug displays, recycling and energy saving tips, door prizes, fitness fun, and more! South Cobb Recreation Center, 875 Six Flags Drive, Austell.

The Beauty of Bulbs! From Amaryllis to Zephranthes
Friday, April 11, noon to 1:00 p.m. Free and open to the public. Presented by Master Gardener Debra Stockton as part of the ongoing Lunch & Learn series of the Master Gardener Volunteers of Cobb County, at the Training Room of the Cobb County Water lab, 662 South Cobb Drive (at the intersection with Atlanta Rd.). Debra will give us the ABCs of bulbs with a focus on Georgia favorites: daffodils, gladioli, and tulips.

Bluebird Trail Tour
Saturday, April 19, 10:00 a.m. Free and open to the public. Cobb Master Gardener and Bluebird expert Jim Bearden will conduct a guided walk of the 2.3-mile Bluebird Trail at Green Meadow Preserve Park, at 3780 Dallas Hwy., Powder Springs, GA, 30127. Follow the Bluebird Trail blog at bluebirdtrail.blogspot.com.

Garden Fair and Plant Sale
Friday, April 25, 10:00 a.m. to 4:00 p.m., and Saturday, April 26, 9:00 a.m. to 5:00 p.m.  Presented by the Master Gardener Volunteers of Cobb County, the Fair and Sale will include plants for sun and shade, native plants, plants for pollinators, vegetables, herbs, garden art, a Master Gardener booth, and more!  Free admission. Jim Miller Park, Equestrian Center, 2245 Callaway Road SW, Marietta, 30008.

Dahlias
Tuesday, April 29, 6:30 – 8:00 p.m. Free and open to the public. Master Gardener and Extension horticulturist Renae Lemon will present a seminar on the basics of growing beautiful Dahlias all summer and preserving the tubers for sharing and spring planting. UGA Extension/Cobb County, second floor, 678 South Cobb Drive, Marietta, GA, 30060. For additional information and to preregister, call 770-528-4070.

Friday, March 21, 2014

40-Gallon Challenge and World Water Day

This year, UGA Extension in Cobb County is beginning active promotion of the 40-Gallon Challenge, a water-saving program that encourages specific, easy changes to save as much as 1000 gallons of water per household per month, for participating households.

The program is designed to deliver a couple of key benefits as outcomes:  "Reducing water usage at home not only saves this precious resource, it also helps homeowners keep more money in their wallets."

In the 40-Gallon Challenge, households are asked to pledge to make changes that will save water. The top three most-chosen changes to date are "reduce irrigation station run times by 2 minutes," "use a broom instead of a hose to clean driveways and sidewalks," and "fix a leaky toilet."  If the changes in water use add up to savings of 40 gallons each day, then the total monthly savings will be about 1000 gallons, and that large a savings is going to have a much-appreciated, lowering effect on a monthly water bill.

The list of specific water-saving changes and how much water each change saves is posted HERE.

This announcement for the 40-Gallon Challenge is being posted today, because tomorrow, Saturday, March 22, is World Water Day. The goals for the special day this year include highlighting the relationship between water and energy, working to bring clean water to the many, many people who currently don't have access, and working toward sustainable water use.

One implication of World Water Day is that other parts of the world are focusing on water use, too. Area citizens who decide to join the challenge will have a lot of company in their quest to use water more efficiently, and not just in the state of Georgia!

Wednesday, March 19, 2014

Irrigation Basics, Guest Post by Becky Griffin


We tend to take our irrigation systems for granted, setting them up and forgetting about them.  Ideally, irrigation systems should be inspected by a certified irrigation professional once a year.  The underground pipes and delivery systems can be complicated.  Oftentimes, irrigation is set to run after we have left for work.  We could have a problem and not even know it.  March is a great time for a basic homeowner irrigation check.

Basic Irrigation Checklist

 
1.       Check to see if the system is set to run at the appropriate time.  The 2010 Outdoor Water Use Guidelines allow automatic irrigation systems to run between 4 PM and 10 AM.  Ideally, for turfgrass the system should run between 5 AM and 9 AM.  This mimics dew time and allows the turfgrass to dry off before the heat of the day.  It is also the best time to minimize water evaporation.  
 
2.       Turn the system on.  Is there adequate overlap of water?  Notice any dry spots.  You may need to adjust sprinkler heads to achieve equal coverage.

3.       Check sprinkler heads.  Are they all working?  Sprinkler heads are easily damaged by lawn mowers.  These may need to be replaced.

4.       If something is obviously clogged it may be the sprinkler head nozzle or the sprinkler head filter.  Sprinkler head nozzles may become clogged with soil or cut grass.  To run efficiently, these will need to be cleaned.  Inside most sprinkler heads is a filter.  Over time this filter may become clogged, especially if the system runs on well water.  Filters can be cleaned with compressed air or replaced.  
 
5.       Notice the pop-up sprinkler heads.  Are they popping up?  Are they high enough?  Over time the ground may have settled and the heads may not be at the correct level for effective watering.  
No need to water the sidewalk!

      6.       Check that no water is being sprayed on non-target areas such as driveways, streets and building.  Problems here may just require a simple nozzle direction adjustment.

7.   Make note of any run-off. If the water is being delivered too quickly, it might not have time to soak into the soil, and you may be sending hundreds of gallons of water down the street. If run-off is a problem, you may need to adjust the delivery rate.


Remember that turfgrass needs just one inch of water per week.  More turfgrass problems are related to over-watering than to under-watering.


Becky Griffin is a program associate with the  UGA Center for Urban Agriculture.