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A Rose is a Rose is a Rose
Posted on : January 9, 2018

Roses are known by everyone in the world, you don’t have to be a gardener to know what a rose bloom looks like. There are many different groups of roses and climate determines which rose plants grow best in which area. Houston weather can be difficult to grow hybrid teas or moss roses without having to spray constantly for black spot with a fungicide. Black spot fungus thrives with high temperatures and high humidity so finding roses resistant to black spot should be your top priority when selecting rose varieties.

WHERE TO PLANT ROSES

When siting a location to grow roses in your home garden, look for an open area in the middle of the yard or a space that get morning sun and evening sun for the best growth and flower production. Do not choose areas against a fence or structure as this reduces the air flow and the amount of strong sunlight the plants receive. (More sun, more flowers) When there is a fence or wall, the plant only receives light from one side, causing phototropism of the plant. (Growing to the light) Reduction of light and air flow encourages pest and disease to set up house as the plants next to a structure form a secure space from wind, rain, and the elements.

Roses need a MINIMUM of 6 hours of direct sun, not filtered by trees or buildings. Using a north or eastern exposure can also be a hindrance if there are trees in the neighborhood, across the street or if you back up to a wooded area so don’t just look at your garden space, look around to see what could possibly impact your success with growing roses.

BEST ROSES FOR GULF COAST

Since 1887 W.Kordes Sohne has been breeding roses and is one of the largest rose breeding programs in the world. Now 4th generation KORDES continued goals of breeding are 1) disease resistance against fungal diseases black spot, powdery mildew and downy mildew, 2) Flower quality; long lasting, self-cleaning, rain resistance and fragrance, 3) Vigorous growth habit with good branching. Trialing garden roses takes a minimum of seven years before releasing into the market and it is the strict criteria that makes Kordes a great rose for the Gulf Coast. Kordes roses are available in Hybrid Tea (Single stem single flower), Floribunda (cluster of flowers on one stem) and Climbers. Beverly, Pink Enchantment, and Iceberg are 3 you can find at the Arbor Gate.

Old Garden Roses or Antique Roses have been rustled in Texas cemeteries for years. A local group called The Texas Rose Rustlers meet and collect roses growing in cemeteries for propagation as these roses receive virtually no care are vigorous, hardy, and disease resistant.

Antique roses or OGR’s are not grafted, they grow on their own roots and many of these are on the Texas A&M Earth-Kind Plant List, such as The Fairy, Ducher, Georgetown Tea and Cecil Brunner (sweetheart rose) to name a few, see complete list: www.earthkindroses.tamu.edu.

Drift roses are a low growing landscape rose that grows from 12-30” tall and spreads. This group of roses came from Conrad-Pyle, a breeder who introduced us to the Knock Out Rose which has become a legend in the landscape for disease resistance and continuous flowers. Drift roses do not have fragrance but that is replaced by almost continuous bloom as a landscape rose.

PRUNING ROSES

Heavy pruning of roses should be done February 14th which reduces plant structure 50-60%. Remove all small twiglets that will never produce a bloom as this is why they are called suckers, sucking energy from the plant. Canes that are entwined or rubbing, the lesser should be removed. Besides regular deadheading, with a 10 month growing season, roses should be pruned again late summer to early fall to produce a wonderful fall bloom as roses love the cooler weather. Any time pruning is done, you should always follow with an application of organic fertilizer around each plant top-dressed with one-two inches of compost to promote new root growth and feed the plant! (Remove mulch before feeding and composting and apply to bare soil)

As with all plants, it is best to build your flower beds with expanded shale worked deep into the heavy soil along with organic fertilizer and good compost. The shale creates air spaces in the soil for deep rooting and breathing, the organic fertilizer converts a sterile soil by calling soil microbes to help build a healthy, living soil that supports life and growth and the compost is an organic material that acts as the binder for both.

HAPPY VALENTINES DAY FROM THE ARBOR GATE!

Written by Linda Gay

Linda received her Associates Degree in Horticulture from Trident Technical College in Charleston, SC. She moved to Houston the summer of 1979 and worked in the commercial green industry until 1985. October 1985 Linda stared at Mercer Arboretum and Botanic Gardens and retired in May 2011. She was the director for 11 years. Linda is first and foremost a gardener, constantly manipulating soils and putting new plants in the garden, always learning and growing. She has killed plants every which way you can and this experience has made me a plant expert. After 6 months of retirement Linda was very fortuitous and landed in the coolest gardener’s paradise, The Arbor Gate in Tomball, Texas.

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