Wednesday, June 6, 2012

Maintenance Calendar for Coastal Virginia


 For those of us in Coastal Virginia, I have put together a summary of tasks for maintaining our refined and pre-bonsai stock.  (USDA Zone 8a)

January
· Work on styling pines.  Thaw out for 24 hours before work.
· Check trees in winter storage every week for water needs.

February
· Potting begins the second or third week of this month.  Trees are re-potted in this order, Japanese maple, general deciduous, larch, hornbeam, pines, junipers, and beech.
· Trident maples can be re-potted a little late as long as the tiny leaves are still red.
· After re-potting leave trees out in the sun, the heat will stimulate root production.
· Larch, wire, prune leaving at least one bud behind cut to prevent die back.

March
· Finish up potting by mid March.  This month you should be re-potting the azaleas, boxwood, and other broad leafed evergreens.
· The first two weeks of March are a great time to collect native Carolina Hornbeam.
· By mid March the buds on Japanese maples should be extending.  Now is the time to pinch out the centers to prevent extension and reduce inner-nodal length. (Refined trees).

April
· Begin feeding.  For refined deciduous trees, wait until new leaves have hardened off before fertilizing lightly.  For trees in training, your goal is to increase trunk diameter.  Fertilize your trees early. 
· Feed Japanese Black Pines heavily to assist the trees in budding after de-candling.
· Deciduous pinch or cut new shoots when they have hardened off.

May
· Mid May wire deciduous trees in pre-bonsai training.  Cracks will heal easier when sap is active.  Check wire often.  Wire when branches are still young.
· Fertilize trees in training
· Candle pinch pines to balance energy during the pineapple stage before the needles begin to extend.
· Apply micro nutrients to pines right before the candles pineapple stage.
· Eastern White Cedar, feed moderately year round.  Prune off long shoots on strong areas, leave the others alone.  Be careful of new foliage when wiring.

June
· Wire trees in pre-bonsai training.
· Work on Junipers, remove spring growth with sharp scissors leaving a small portion of the new growth.  Protect trees from hot midday sun after cutting back.  After a few weeks pinch back new growth lightly.  Some part of the new growth always needs to be kept.
· Early to mid June de-bloom and prune Azaleas.  Pruning late will weaken shoots and flower buds.
· De-candle refined Japanese Black and Red Pines, 3rd or 4th week of June, you should remove fertilizer and let it spend its own reserved energy for one month to six weeks.  Then start to feed in mid August to November.  For trees in training do not de-candle, feed it till the end of the year.
 
July
· Feed finished trees lightly
· Feed trees in training
· Japanese maple do not defoliate after mid July.
 
August
· Stop all pruning and pinching.
· Japanese Black Pine, de-candling  should be sending out new buds at this time.  If you have more than two, leave them alone and then thin them back in the fall.  You can thin them out when you pull old needles.  Leaving them will cause long needle growth and bud extension.
· Ponderosa, mugo, high mountain pines, larch, After needles harden off , it is time to feed them with low nitrogen fertilizer.
 
September
· Ponderosa, mugo, high mountain pines, clean out old needles.
· Late September to October, collect wild pines.
·Trim shoots of pre-bonsai pine stock to desired branch length, you should see new buds develop in November.
 
October
· Root prune ground stock with shovel and rotate if necessary to allow sun access to all areas.
· After leaf fall wire deciduous refined trees, be careful of heavy bends, this time of year there is low sap flow.  Leave stubs for winter die back.
 
November
· Eliminate dominant buds on refined pines leaving 2 of the weaker buds.
· Work on styling pines.
 
December
· First week of December begin preparing winter storage.
 · Spray with diluted lime sulfur, Note: do not spray azaleas, hemlock, spruce, or recently styled trees.

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