THGC | December
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December

Trees: 
Planting: December is an ideal time to plant trees

Transplanting: Can be done this months with good results.

Fertilizing: No fertilizer should be applied to trees this time of year

Pest Control: Scale infestations can be sprayed with a lightweight horticultural oil – do not spray immediately before below freezing temperatures are expected. Spray several times about 10 days apart.

Pruning: Winter is the ideal time to prune both deciduous and evergreen trees.

Roses:

Planting: Container roses can be planted throughout this month.

Transplanting: 
After a killing freeze or frost is a good time to transplant roses to a new location.

Fertilizing: No fertilizing is necessary during this month.

Pest Control: Blackspot can occur in winter months but usually isn’t serious enough to need spraying.

Pruning: No pruning is necessary this month.

Watering: Established roses should receive enough water through rainfall. Newly planted or transplanted roses need watering if sufficient rain doesn’t fall.

​Lawn:
Planting: Ryegrass can be planted through the winter. Dormant sodding of warm-season grasses (St. Augustine, Bermuda, Centipede) can be done but the turf can be damaged by a freeze.

Fertilizing: Fertilize ryegrass after your warm-season grass has gone dormant (turned brown). The ryegrass will turn a darker shade of green and will also grow vigorously.

Pest Control: Pest control is minimal this time of the year

Mowing: Keep ryegrass mowed to a height of 2 inches.

Watering: Dormant warm-season grasses will usually receive enough water through rainfall. Lawns overseeded with ryegrass may need to be watered if the weather is mild and dry.

Annuals:
Planting: Cool/cold-season annuals can be planted with good results during this month.

Fertilizing: Fertilize only if plants have pale leaves, yellow lower leaves or stunted growth.

Pest Control: Pest control is minimal this time of the year

Watering: Rainfall usually makes watering unnecessary, but water beds thoroughly when a freeze threatens.

Shrubs:
Planting: Shrubs planted now have 5 months to establish themselves before the heat sets in – thus enabling them to perform better during the summer months.

Transplanting: Can be done now through the end of February.

Fertilizing: No fertilizer should be applied to shrubs this time of year.

Pest Control: Little pest control is necessary this month except for scale infestations.

Pruning: Most shrubs should be dormant by mid-December and can be pruned without stimulating new growth. DO NOT prune any shrubs that bloom in the spring since they have already begun to set their buds.

Watering: Mother Nature usually makes watering established shrubs unnecessary. Newly planted or transplanted shrubs need watering if the weather is not keeping the soil moist.

Perennials:
Planting: Perennials aren’t usually planted in December

Transplanting: Most transplanting and division of perennials is done prior to December

Fertilizing: No fertilizer is required this month.

Pest Control: Most perennials are dormant in the winter so there is no pest problems

Pruning: Cut back fall-blooming perennials that have finished blooming. Cut back any foliage that has been damaged by freeze or frost and apply 3 to 4 inch mulch over the roots and base of the plant.

Watering: Cool weather and regular rainfall make it unlikely that additional watering is necessary.

Bulbs:
Planting: Tulips and hyacinths can be planted this month.