Industry Standards American Association of Nurserymen (AAN) and the American National Standards Institute (ANSI)
Don’t Put a $100 Tree in a $10 Hole
Establish guidelines: • Height to caliper ratios for bare root stock • Root ball – width/depth
Marcus Duck Academic Advisor, Instructor & Program Coordinator MSU’s 2-year Landscape Horticulture Programs www.hrt.msu.edu/students
A. Liners • Young seedlings • Need to be hardened off to acclimate to new site
• Branching – number of branches •
Search for ANLA Standards at: http://www.anla.org
B. Bare Root • No soil – roots must be moist • Dug late fall/winter and stored • Shipped dormant • No freezing temps!!
B. Bare Root •
Types of plants: •
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deciduous, fruit trees up to 1 ½ -2” caliper, evergreen seedlings up to 5’, perennials
Method: •
Maintain as many fine roots as possible
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Keep roots moist and top cool = no bud break
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Heel-in using peat moss, newspaper, etc.
B. Bare Root Tops must remain dormant
C. B&B (balled and burlapped) • Ball of soil wrapped with burlap – tied with
C. B&B (balled and burlapped) • Handle with care • Must keep soil and roots in contact with one another
wire basket or rope
• Larger the tree @ planting = longer establishment period
C. B&B (balled and burlapped) Types of plants: •
C. B&B (balled and burlapped) •
Rootball needs to be as tight as possible
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Firm – punch ball and gently move trunk
Shrubs, shade trees, specimen trees
Method: •
Tree spade and drop into burlap-lined wire basket
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Stable
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Hand dug: ¼ lacing or drum lacing
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12” diameter rootball for every 1” in trunk caliper
Moist but not standing in water (smelly = rot)
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Not distorted
D. Container-grown / Containerized • Available year round • Plant “any time” • 1, 2, 3, 5, 12, and larger – gallon sizes • All types of plants
E. Tree Spade • Small to very large specimens • 24”, 36”, 42”, 65”, 90”, etc. • Ideally dug spring or fall
E. Tree Spade Types of plants: specimens and large caliper •
F. Tree Boxes • Very large specimens
Method: •
12” of root ball per 1” of caliper
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Moist soil before digging
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Avoid GLAZING – clay content and heat from friction
Preparing the Site
Preparing the Site
Soil Test:
Soil amendments:
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pH, soil type, nutrients
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Can actually impede instead of help
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Before design begins = select appropriate plants
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Make sure mixture/transition between two
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Don’t test for N = levels change quickly
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DO test for P & K
types of soil •
Preparing the Site •
Call “Miss Dig” 24/7 = 1-800-482-7171 or 811
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Also on-line www.missdig.org
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Call 3 working days before you dig
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Dog – invisible fence present?
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Gas or Elec installed by homeowner?
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Look for overhead lines
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Depth of utilities not consistent
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Contractor must make call
DON’T simply cover bad soil with topsoil
It’s Time to Plant •
Type of material used = extend season or window of opportunity
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Best time = warm soil temps and well aerated – NOT overly saturated!!
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Availability of after care – are plants just left to fend for themselves?
It’s Time to Plant
It’s Time to Plant
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Don’t plant $100 tree in a $10 hole!!
Bare root:
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Wide, shallow hole – room for backfill
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Remove dead and damaged roots only
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Good soil contact – mix native and amendments
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Do NOT prune roots to fit hole
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Keep roots moist – soak to re-hydrate
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Tamp down to remove air pockets
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Water immediately
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NEVER bury the graft or bud union
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Rough up edges!!!
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Don’t dig too deep
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Settling can occur
It’s Time to Plant B & B: •
Get it in the hole before removing packaging
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If plastic – remove completely
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Do NOT bunch up burlap in the hole
It’s Time to Plant •
Top of root ball = at or just above the natural grade
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Top of root ball in contact with backfill
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REMOVE: •
UPPER BURLAP
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ROPE
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UPPER RINGS OF WIRE BASKETS
REMOVE UPPER RINGS OF WIRE BASKETS
Must see the root flare!!!
It’s Time to Plant
It’s Time to Plant Container-grown •
Gradual transition between container media and native soil
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Troughs o.k. IF plant is highest point
It’s Time to Plant
It’s Time to Plant
Container-grown
Container-grown
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Rough-up the root ball (over the planting hole)
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Point roots outward
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Butterfly technique if extremely pot bound
Positioning the Plant •
Aesthetics – best side to viewer
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Turn sparse side to sun
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Heavy branch side into wind
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Knee of grafted plant – if possible, orient to NE
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Keep trunk straight / vertical – ignore ball or canopy
Very extreme root ball fix (after):
After Planting Care Fertilization •
Bad practice to fertilize at planting
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Avoid pushing top growth
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Very little or no extra Nitrogen
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P & K adjusted BEFORE planting
After Planting Care Mulch and Water •
Check ball AND backfill
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10gal / inch caliper / week for 1 to 2 yrs as needed
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Mulch is wonderful: •
Moderate temp
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Retains moisture
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Suppresses competition
After Planting Care Mulch and Water (cont.) •
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Only remove the 3 D’s
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Wait 1 full year
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Exceptions: •
Thinning cuts to establish scaffold
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Avoid heading cuts
Typically used for extended periods
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Treat trees with borer and/or bark beetle spray
After Planting Care Pruning
“Gator” bags:
After Planting Care Staking • Rule #1 – DON’T • Rule #2 – Remove after 1 growing season • When to stake? • Poor taper – can’t hold its canopy • Caliper greater than 3” • Oversized top • Unsupportive native soil • Windy site = 1 stake upwind
After Planting Care
After Planting Care
Staking (cont.)
Support Stakes:
Growth Effects
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Attached in upper half of canopy
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Use 1 to 3 stakes at one point on the trunk
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Ground anchor 2/3 height of tree connector from trunk
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If held too tightly: •
Reduce taper and smaller root system
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Reduce caliper development
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More prone to breaking or tipping after removed
If in contact with bark: •
Shaded cells will stretch due to auxin flow
After Planting Care
After Planting Care
Support Stakes:
Support Stakes:
•
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Soft, bark friendly materials •
Pantyhose, burlap, soft
Must allow movement!! •
Compression springs will allow movement
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Leave slack
plastic = GOOD • •
Rubber hoses & wire = BAD
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Keep stake away from bark
Use turnbuckles to allow easy adjustment
After Planting Care Tree Wraps •
AVOID USING THEM!!
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Harbor insects
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Weakens covered bark
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Only use if: •
Thin bark
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Hot microclimate with chance of sun scold
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Prevent deer & rabbit damage
After Planting Care Tree Wraps (cont.) •
Do Not want it to hold moisture
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Light color to moderate temp
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Wrap starting at the bottom for better water shed