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Johnson County

Research-based Information You Can Trust — Localized for your needs

Johnson County
11811 S. Sunset Drive
Suite 1500
Olathe, KS 66061

Office Hours:

Monday - Friday,
8:30 a.m. - 5 p.m.

(913) 715-7000
(913) 715-7005 fax
jo@listserv.ksu.eduMap to our office

Kansas State University is committed to making its services, activities and programs accessible to all participants. If you have special requirements due to a physical, vision, or hearing disability, contact Johnson County K-State Research and Extension, 913-715-7000.

Kansas State University Agricultural Experiment Station and Cooperative Extension Service

K-State Research and Extension is an equal opportunity provider and employer.

December Garden Calendar

Vegetables and Fruits

  • Store leftover seeds and a cool, dry location, for example, in a sealed jar placed in the refrigerator.
  • Check vegetables in storage for spoilage.
  • Mulch strawberries for winter protection.
  • Clean and oil garden hand tools for winter.


  • Mulch roses by mounding soil 6 to 8 inches deep over the plants to protect the graft.
  • Mulch perennial beds with 2 to 4 inches of straw, shredded leaves, or other lightweight material.
  • Cut tall hybrid tea roses back to 18 to 24 inches to reduce wind whipping and plant damage.
  • Continue to plant spring flowering bulbs until the ground is frozen. Water and mulch.
  • Give plants or gift certificates as holiday gifts for gardening friends.
  • Empty decorative pots and containers. Store inside or decorate for winter.


  • Pick up fallen leaves, limbs, and other debris from lawn to prevent suffocation of the turf during winter.
  • Store any left over lawn fertilizers in dry location and out of reach of children and pets.
  • Store pesticides in a cool (not freezing) dry location for winter, out of reach of children and pets.

Trees and Shrubs

  • Keep heavy snowfall from limbs of trees and shrubs by lightly shaking to avoid damage.
  • To prevent breakage, avoid shoveling snow onto trees and shrubs.
  • Check and protect the trunks of young trees and branches of shrubs for rabbit damage.
  • Living Christmas trees are special. Leave in your home no longer than one week, then acclimate to outdoors and plant in a desirable location.
  • Prune damaged branches throughout the winter months.
  • Water newly planted trees and shrubs in winter to prevent dry soil conditions.
  • Mulch roots of tender shrubs such as azaleas and rhododendrons to keep vigorous during winter.
  • Prune branches of junipers, pines, hollies, and other plants to use as holiday decorations.


  • Start planning for next year by making notes and preparing orders.
  • Turn compost pile to encourage winter breakdown.

Return to Garden Calendar

K-State Research and Extension Johnson County Master Gardener logo

Have questions? The Garden Hotline is staffed by trained EMG volunteers and Extension staff who will assist you with questions.

Phone: (913) 715-7050

Email: garden.help@jocogov.org