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1、.,Maintenance of Trees reject excessively root-bound plants (circling roots) B leads to settling Prune heavily to balance the root/shoot ratio Tightly stake the tree so it cant sway in the wind Fertilize,.,Planting in Problem Sites,In clay soil, vertically score the edge of the planting hole, to pre
2、vent clay pan from forming In poorly drained locations, plant high with 1/3 of root ball above grade, but be sure to cover with soil (create a mound),.,Staking,Only install if absolutely necessary! Remove after 1 year, or lower and remove after 2nd year.,.,Trunk Wrapping,Usually not needed to preven
3、t sun scald! Can lead to problems if bound too tightly or kept on too long Only use if sapling does not have any lower branches or leaves Best materials are perforated plastic collars or wrap. Kraft paper is OK Wrap from the bottom up Remove after 1st growing season,.,Watering,Water deeply, but infr
4、equently Trees apply at least 10 gal each time Shrubs apply 3-5 gal each time Heavy soils water once a week Sandy soils water twice a week Soaker hoses work great to water a bed. Holding a hose DOES NOT work,.,Fertilizing,No fertilizer is needed the 1st summer or at the time of planting Light fertil
5、ization is OK the 1st fall or early the next spring Usually lawn fertilizers supply plenty for tree growth Many landscape shrubs outgrow their settings anyway,.,Fertilizers,High pH is often a problem in Kansas, so select formulas with sulphate Kansas soils typically have adequate quantities of potas
6、sium (K) and phosphorous (P) Nitrogen is the element most needed turf fertilizersurea (46-0-0)ammonium sulphate (20-0-0),.,Specialty Fertilizers,Root stimulators (vitamin B) Fertilizer spikes are convenient, but very expensive per pound of nutrient Acid-forming fertilizers with trace elements (Fe, M
7、g, Mn, Zn, B) may be useful for some species and sites,.,Mulch,Secret to landscape success! Almost any organic material can be used- use caution with grass clipping (high N) or leaves (pack tightly or blow away) Landscape fabric will aid in weed control, and organic matter will last longer Remember
8、to check mulch depth, and reapply twice a year (spring wounds heal slowly and may be prone to disease,.,Pruning,Pruning large branches,.,Pruning,Newly planted trees Prune little, if any at time of planting Year 1 or 2 - remove a few of the lowest branches lowest branches should be 7 off of the groun
9、d - select branches with wide angles to the trunkthat are amply spaced apart radial branch development * - select the most upright, vigorous branch and make it the leader remove the competing weaker branch or fork leaning north.,.,Pruning,Maintenance pruning Dead or diseased branches Water sprouts g
10、rowing near the base of the tree trunk or in the tree Branches that cross which causes rubbing and consequent damage to the bark Narrow V crotches should be eliminated Branches that are likely to interfere with telephone or electric wires Prune branches to increase air flow Remove damaged or unsight
11、ly branches,.,Pruning,When to prune evergreens? Pines: Usually not necessary unless you want to improve the denseness Prune candles to length after it is fully grown; late spring Spruce: Cut back 1 year old shoots to one of the lateral side buds or branches in early spring before new growth begins J
12、unipers or arborvitae: During early spring, prune branches bask to a side branch Inner dead zones do not make pruning cuts into this zone; new growth will only develop from green twigs,.,Pruning,When to prune shrubs? It depends on when the shrub blooms, due to the timing of formation of the flower b
13、uds Spring flowering shrubs (forsythia, lilac, crabapples, etc)- prune immediately after flowering Summer flowering shrubs (spireas, roses, hibiscus)- prune in late winter or when dormant,.,Pruning,.,Pruning,Rejuvenating shrubs Done when broad-leaved shrubs have become overgrown Cut back entire shru
14、b to 3”-5” stubs in late winter Caution when working grafted individuals, cut back to just above the graft. Shrubs that tolerate rejuvenation:abelia, dogwood, honeysuckle, hydrangea,lilac, mallow, rose-of-sharon, spirea, St. Johns wort,.,Pruning Shrubs,Rejuvenation,.,Trees Adapted to Kansas,Eastern Redbud Crabapples (rust resistant) Prairiefire Goldenrain Tree Flowering Pear Aristocrat, Cleveland Select Lacebark Elm Ginkgo Oaks (bur, swamp white, shumard, N. red) Sugar Maple Baldcypress,
