3860 Highway 641 North,
Murray, KY  42071  |  (270) 753-1725


Rolling Hills - Frequently Asked Questions - Rolling Hills Nursery & Garden Center
Frequently Asked Questions

Frequently Asked Questions (14)

Bermuda grass is an excellent turf for lawns, but can be an invasive weed in flower beds and landscaping.  We have an herbicide called Grass Killer which can be sprayed over flowers and shrubs and not hurt those plants while killing the weedy grass.  Be advised that more than one application might be necessary.

Sunday, 30 January 2011 19:57

Why are my annuals turning yellow and dying?

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Newly transplanted annuals are susceptible to over watering.  These plants have not had a chance to get roots established and creating conditions that are wet can lead to root disease.  Also sometimes we have weather conditions in early May that are very cool and wet which lead to disease development and the detriment of the plants.

Sunday, 30 January 2011 19:56

How often should I water my trees and shrubs?

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Newly planted trees and shrubs should be watered once or twice per week during the hot and dry spells of the summer.  These plants generally need about an inch of water per week so any time we go a week or two without rain, watering is recommended.  Established trees and shrubs that have been planted for 2 or3 years need only be watered during drought conditions.

These broadleaf evergreens prefer an acid soil and occasionally need some amendments to assure the right pH is present.  Apply aluminum sulphate around the plants in the spring and summer to insure the soil is acidic, and apply liquid iron as a spray on the leaves to compensate for any iron deficiencies.

Sunday, 30 January 2011 19:55

Why are the leaves on my azaleas turning white?

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Azaleas are prone to numerous insect pests but one of the most common is Lace bugs.  The insects suck out the chlorophyll from the leaves on the underneath and the leaves take on a grayish appearance.  Insecticides can be used to treat the pests with a thorough spray application to the bottom of the leaves.

Sunday, 30 January 2011 19:54

When should I fertilize?

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All trees and shrubs should be fertilized with a slow release fertilizer in late February or early March, and again around the first of June if the weather is not too hot and dry.  Annual and Perennial flowers are heavy feeders and should be fed with a water soluble fertilizer every other week during their growing season.

Japanese Beetles are troublesome pests which love to eat roses, crapemyrtle, cherry and plums in particular.  Start spraying with Sevin around the end of May or when you first notice holes in the leaves of the plants.  Spraying may have to be done on a weekly or biweekly basis depending on the rainfall for about 6-8 weeks.  Do not use traps for these insects as the pheromones used in the traps will draw more of the beetles to your garden.

Sunday, 30 January 2011 19:52

When is the best time to trim my shrubs?

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For evergreen shrubs like holly and boxwood, trimming can be done almost any time, but keep in mind that pruning in extreme hot weather will likely result in some foliage burn and pruning after September could cause an explosion of new growth that could be damaged by a freeze.  For flowering shrubs like crapemyrtle, forsythia and azaleas, follow this simple rule- any spring flowering shrub should be pruned in early summer and most summer flowering plants should be cut back in late winter or early spring.

Yews, like the azaleas, prefer a very well-drained soil and amendment should be added to our clay soils before planting.  More times than not in the spring we get lots of rain and our soils become water logged making the conditions right for development of root rot disease.  Usually this disease becomes visible in plants in the summer when they are under heat stress and the pathogens have already damaged the roots and the plants start to die.

Spruces, Junipers and Arborvitaes are beautiful landscape specimens because they hold their foliage year round.  However, most of these species prefer a cooler climate and sometimes struggle in the hot and dry summers we have.  Unfortunately, this stress makes the plants even more susceptible to pests like bagworms, spider mites, scale and even disease.  A spray regime of Triple Action which has an insecticide, miticide, and fungicide all in one will help prevent these problems if done on a monthly basis during the growing season.

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