Below are some of the highlight from the Hillsborough County Gardening Calendar *, compiled by Sydney Park Brown.  

January Transplant cold hardy shrubs and trees Prune deciduous fruit and ornamental plants Protect tender plants from the cold Lightly prune annuals February Fertilize citrus trees if not done in January Plant and fertilize annuals Fertilize lawn and trees including palms Prune your roses before Valentines Day! March Control scab disease on citrus Fertilize perennials Plant and fertilize vegetables Watch for pests April Remove thatch from lawns Seed sod or plug lawns Prune and fertilize spring flowering shrubs Fertilize outdoor potted plants May Prune poinsettias to encourage a dense plant Check for signs of turf insects Check for and control scale insects and mites Control oleander caterpillars June Fertilize citrus trees and outdoor potted plants Spray roses for black spot Correct palm and cycad deficiencies Start cuttings and plant palm trees July Fertilize azaleas, camellias, and hibiscus Correct iron deficiency (yellowing) and check soil pH Recycle grass clippings on grass or flower beds Install a rain sensing device August Add organic material to garden soil Deadhead annuals, perennials, and Crepe Myrtles Lightly groom roses to encourage fall bloom Apply Epsom salts to palms to correct yellowing September Watch for infestation of worms in turf Inspect and repair sprinkler system Divide and replant perennials and bulbs Prune cold-sensitive plants so they can harden off October Fertilize lawn, trees, and shrubs Prepare Christmas cactus for holiday bloom Purchase and refrigerate spring bulbs Clean up fallen tree branches to control twig girdlers November Reduce irrigation frequency as weather cools Plant cold-hardy landscape plants Bring household plants inside for the winter Control scale insects with horticultural oil December Select and tidy up poinsettias for holiday display Recycle fallen leaves and use as mulch Troubleshoot household plant problems Protect tender plants during cold evenings January Start over!   * published by the Hillsborough County Cooperative Extension Service