EVERYTHING YOU EVER WANTED TO
KNOW ABOUT PRUNING…
BUT WERE AFRAID TO ASK
Basics for residential light tree, shrub and pere...
BEFORE I
FORGET…
In my experience,
working in the
garden center, the
most frequently
asked questions are
about pruning.
Why do you think
th...
They say that the most common fear is
that of public speaking …
…followed closely by the fear of killing
your plants by pruning incorrectly!
Now, of course, you are an
exception to the rule being
gardening experts. I would
guess that you actually like
to prune an...
The reality is that, typically, when we offer pruning
classes, it is generally populated by women who
then….
…send this guy out to
do the pruning.

Few homeowners
understand pruning
and, unfortunately,
many landscape
professionals ...
The fear of pruning is
so prevalent it has
even been featured in
many Hollywood
motion pictures.
17650 Elm Street
#1 Light tree pruning and young tree training
#2 Shrub pruning
#3 Perennial pruning
But let’s be
realistic!
Pruning is an art form that can’t be
simply communicated in a classroom
setting. It is a lifelong pursuit of
gathering a c...
#1 LIGHT TREE PRUNING
(AND YOUNG TREE TRAINING)
Pruning is not like Red Bull…
it does not give you wings!!!
The first thing to know is your plant’s tendencies. What
is its natural shape and growth rate? What are its
features and b...
What are we looking to do?
*Remove dead, damaged or diseased branches.
*Enhance tree structure and reduce risk of future b...
When is the time to prune?
What is the desired effect?
*Maximize growth: in early spring.
*Minimize risk of pest and decay...
STRUCTURAL PRUNING
*Removing dead, broken or
damaged branches.
*Selecting a dominate leader or
multiple strong leaders . (...
CODOMINANT STEMS
*Are forked branches of similar size lacking a normal
branch union.
*Frequently forms a weak point of tre...
CROWN CLEANING
*Removing dead, diseased, rubbing, competing and broken
branches.
*Cleaning can be done at almost any time ...
Much of the most important pruning on trees will be done
when they are very young so selection and training are very
impor...
#2 SHRUB PRUNING

GOOD
*Shrubs stand to gain the most from proper pruning techniques.
*Fast pruning is easy to learn, easy to do and easy to sell...
Remember…good pruning cannot
make up for bad design!!!
PRUNING LAWS, PRACTICES, PRINCIPALS AND…
OTHER STUFF
*Pruning stimulates growth from the point of pruning.
*Shearing and p...
How are your shrubs are like Olympic athletes?
You have to know what
kind of shape you’re in!
It is to your and the
plants benefit to
accentuate natural
plant growth ins...
Gold Mop
Cypress
A 40 year old landscape planting.

There is only 1 pruning method that is effective in this scenario!
DO PLANT TAGS LIE?

Now let’s look at some shrub pruning techniques.
THINNING OR GRADUAL RENEWAL PRUNING

Examples of common shrubs that benefit from gradual renewal or
thinning:
Aronia, Clet...
NOT SO GRADUAL RENEWAL PRUNING

Shrubs that generally respond well to complete renewal pruning:
Aronia, Clethra, Cornus (s...
SHEARING

Common shrubs that are often sheared:
Azalea, Barberry, Boxwood, Burning Bush,
Forsythia, Hibiscus, Lilac (Dwarf...
HOW HARD DO YOU WANT TO WORK?
HOW DO YOU HEDGE?
Sheared plants need
to be periodically
thinned to allow
light to penetrate
the outer shell of
foliage.
As a rule, shear
tw...
AND FINALLY… THE MOST FRQUENTLY
ASKED QUESTION ABOUT PRUNING IS:
Hydrangea paniculata (Cone shaped, summer flowers)

Easy to bloom, hard renewal prune in dormancy.
*Trimming a 2nd time in...
Oak Leaf Hydrangea quercifolia (Large leaves, summer bloom)

Thin as needed or prune hard to renew.
Hydrangea macrophylla (Big leaf Hydrangea)

Some bloom on old wood, others on new so it is important
for you to know what ...
Snowball Hydrangea arborescens
(Soft leaves, round flowers in summer)

For best results, complete renewal pruning every ye...
#3 PERENNIAL PRUNING

Color is king!
WHY IS PERENNIAL PRUNING
IMPORTANT?
*MORE COLOR BOTH IN FLOWERS AND FOLIAGE.
*EFFECTIVE AND ORGANIC INSECT AND DISEASE
CON...
There are many pruning techniques to enhance perennial
flower performance.
Understanding some of the common terminology ma...
WHAT IS DEADHEADING?

No, it has nothing to do with
Jerry Garcia!
Deadheading is the removal of
spent flowers to prolong b...
Bloom sequencing- Cutting back a plant to delay flowering.
Cutting back- Pruning back foliage and perhaps flower buds
and ...
PERENNIALS THAT MAY REBLOOM
WITH PROPER PRUNING
Achillea, Aster frikarti ‘Monch’, Astrantia, Campanula,
Coreopsis, Delphin...
MAY-JUNE ZENITH OF BLOOM

AUGUST
RE-BLOOM

JULY GETTING TIRED

‘Carradonna’ and
‘May Night’ are better
re-blooming Salvia
...
PERENNIALS TO PRUNE FOR IMPROVED
FOLIAGE/OVERALL APPEARANCE
Achillea, Alcea, Alchemilla, Anemone, Arabis, Armeria,
Artemes...
BEFORE

AFTER
DURING

BEFORE

AFTER
PERENNIALS TO TRIM FOR HEIGHT
CONTROL/SHAPE/BLOOM SEQUENCING
Achillea, Aconitum, Adenophora, Alcea, Artemesia,
Aster, Bolt...
Now go outside
and have fun in
the dirt.
Thank you!

16540 CHILLICOTHE RD CHAGRIN FALLS, OH. 44023
440-543-5123 WWW.LOWESG...
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask
Upcoming SlideShare
Loading in …5
×

Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask

682 views

Published on

A lecture to pass along some basic knowledge of pruning

Published in: Self Improvement
0 Comments
2 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
682
On SlideShare
0
From Embeds
0
Number of Embeds
4
Actions
Shares
0
Downloads
13
Comments
0
Likes
2
Embeds 0
No embeds

No notes for slide

Everything you ever wanted to know about pruning trees, shrubs and perennials but was afraid to ask

  1. 1. EVERYTHING YOU EVER WANTED TO KNOW ABOUT PRUNING… BUT WERE AFRAID TO ASK Basics for residential light tree, shrub and perennial pruning. Jeff Griff President Lowe’s Greenhouses YOU’RE JUST A SNIP AWAY FROM PERFECTION!
  2. 2. BEFORE I FORGET…
  3. 3. In my experience, working in the garden center, the most frequently asked questions are about pruning. Why do you think that is?
  4. 4. They say that the most common fear is that of public speaking …
  5. 5. …followed closely by the fear of killing your plants by pruning incorrectly!
  6. 6. Now, of course, you are an exception to the rule being gardening experts. I would guess that you actually like to prune and enjoy this leisure time activity.
  7. 7. The reality is that, typically, when we offer pruning classes, it is generally populated by women who then….
  8. 8. …send this guy out to do the pruning. Few homeowners understand pruning and, unfortunately, many landscape professionals lack this skill as well.
  9. 9. The fear of pruning is so prevalent it has even been featured in many Hollywood motion pictures.
  10. 10. 17650 Elm Street
  11. 11. #1 Light tree pruning and young tree training #2 Shrub pruning #3 Perennial pruning
  12. 12. But let’s be realistic!
  13. 13. Pruning is an art form that can’t be simply communicated in a classroom setting. It is a lifelong pursuit of gathering a combination of plant knowledge as well as gauging cause/affect results from various techniques, timing and ever-changing environmental conditions.
  14. 14. #1 LIGHT TREE PRUNING (AND YOUNG TREE TRAINING) Pruning is not like Red Bull… it does not give you wings!!!
  15. 15. The first thing to know is your plant’s tendencies. What is its natural shape and growth rate? What are its features and benefits.
  16. 16. What are we looking to do? *Remove dead, damaged or diseased branches. *Enhance tree structure and reduce risk of future branch damage/failure. *Promote healthy and attractive growth. *Enhance flowering and/or fruit production. *Eliminate rubbing/competing branches. *Remove co-dominate stems. *Extend life of landscape plants. You may end up finding this information most helpful when selecting new tree specimens.
  17. 17. When is the time to prune? What is the desired effect? *Maximize growth: in early spring. *Minimize risk of pest and decay: during dormancy. *Minimize effect on fruit/flowers: immediately after flowering. ***Timing may not be an option when pruning storm damage or when eliminating hazardous branches.
  18. 18. STRUCTURAL PRUNING *Removing dead, broken or damaged branches. *Selecting a dominate leader or multiple strong leaders . (not all trees have a central leader) *Select the lowest permanent branches. *Select scaffold branches that are spaced evenly both vertically and radially. *Identify temporary branching for energy production and protection. ***Do not remove any more than 25% of a tree canopy per season.
  19. 19. CODOMINANT STEMS *Are forked branches of similar size lacking a normal branch union. *Frequently forms a weak point of tree with included bark. (Bark embedded in crotch of tree) ***Not all trees have a single dominant leader.
  20. 20. CROWN CLEANING *Removing dead, diseased, rubbing, competing and broken branches. *Cleaning can be done at almost any time of wear. CROWN THINNING *Removal of branches to improve light penetration and air circulation. *Reduces risk of storm damage. *Shows off trunk form and/or attractive bark. *Be careful not to be too aggressive.
  21. 21. Much of the most important pruning on trees will be done when they are very young so selection and training are very important for a long and care-free life.
  22. 22. #2 SHRUB PRUNING GOOD
  23. 23. *Shrubs stand to gain the most from proper pruning techniques. *Fast pruning is easy to learn, easy to do and easy to sell. *Pruning is often done in late summer when it is convenient for landscape companies. (A perfect time to cut off newly formed flower buds.) *Proper pruning takes time, patience, knowledge and (when done correctly) is not easily detected.
  24. 24. Remember…good pruning cannot make up for bad design!!!
  25. 25. PRUNING LAWS, PRACTICES, PRINCIPALS AND… OTHER STUFF *Pruning stimulates growth from the point of pruning. *Shearing and pruning are not the same. *Prune spring flowering shrubs immediately after flowering. (Flower buds are formed during previous summer) *Prune summer blooming shrubs during dormancy. *Trimming can be done any time. *Know what plants bloom on old growth and new growth. *Know your plants. Consider getting professional assistance to help identify your specific pruning needs.
  26. 26. How are your shrubs are like Olympic athletes?
  27. 27. You have to know what kind of shape you’re in! It is to your and the plants benefit to accentuate natural plant growth instead of fighting against it. Another very important detail is to understand your plants potential growth rate.
  28. 28. Gold Mop Cypress
  29. 29. A 40 year old landscape planting. There is only 1 pruning method that is effective in this scenario!
  30. 30. DO PLANT TAGS LIE? Now let’s look at some shrub pruning techniques.
  31. 31. THINNING OR GRADUAL RENEWAL PRUNING Examples of common shrubs that benefit from gradual renewal or thinning: Aronia, Clethra, Deutzia, Forsythia, Itea, Lilac, Mockorange, Potentilla, Spirea, Viburnum, Weigelia.
  32. 32. NOT SO GRADUAL RENEWAL PRUNING Shrubs that generally respond well to complete renewal pruning: Aronia, Clethra, Cornus (shrub forms), Deutzia, Forsythia, Hydrangea paniculata, Itea, Mockorange, Potentilla, Privet, Spirea, Taxus, Viburnum, Weigelia.
  33. 33. SHEARING Common shrubs that are often sheared: Azalea, Barberry, Boxwood, Burning Bush, Forsythia, Hibiscus, Lilac (Dwarf), Privet, Taxus.
  34. 34. HOW HARD DO YOU WANT TO WORK?
  35. 35. HOW DO YOU HEDGE?
  36. 36. Sheared plants need to be periodically thinned to allow light to penetrate the outer shell of foliage. As a rule, shear twice, prune/thin once.* (*Ideally done in late fall to allow snow penetration)
  37. 37. AND FINALLY… THE MOST FRQUENTLY ASKED QUESTION ABOUT PRUNING IS:
  38. 38. Hydrangea paniculata (Cone shaped, summer flowers) Easy to bloom, hard renewal prune in dormancy. *Trimming a 2nd time in early summer can also be helpful in certain situations. *Certain cultivars respond better to mid-season trimming.
  39. 39. Oak Leaf Hydrangea quercifolia (Large leaves, summer bloom) Thin as needed or prune hard to renew.
  40. 40. Hydrangea macrophylla (Big leaf Hydrangea) Some bloom on old wood, others on new so it is important for you to know what you have and prune accordingly. When in doubt, do not cut all the way down and protect stems from freeze and frost.
  41. 41. Snowball Hydrangea arborescens (Soft leaves, round flowers in summer) For best results, complete renewal pruning every year.
  42. 42. #3 PERENNIAL PRUNING Color is king!
  43. 43. WHY IS PERENNIAL PRUNING IMPORTANT? *MORE COLOR BOTH IN FLOWERS AND FOLIAGE. *EFFECTIVE AND ORGANIC INSECT AND DISEASE CONTROL. *IMPROVES OVERALL GARDEN APPEARANCE. *SAVES WORK AND TIME IN THE GARDEN.
  44. 44. There are many pruning techniques to enhance perennial flower performance. Understanding some of the common terminology may be helpful.
  45. 45. WHAT IS DEADHEADING? No, it has nothing to do with Jerry Garcia! Deadheading is the removal of spent flowers to prolong bloom, promote re-bloom , improve aesthetics or to prevent seeding.
  46. 46. Bloom sequencing- Cutting back a plant to delay flowering. Cutting back- Pruning back foliage and perhaps flower buds and deadheads to renew a plant’s appearance and/or to encourage new growth and flowering. Cutting back can also be used to control eventual plant height and/or flowering time. Pinching-Removing the growing tip and first set of leaves to promote the development of side shoots. Used to promote fuller, stockier plants perhaps. Thinning- Removing shoots, leaves or stems to open the plant canopy allowing for better air circulation
  47. 47. PERENNIALS THAT MAY REBLOOM WITH PROPER PRUNING Achillea, Aster frikarti ‘Monch’, Astrantia, Campanula, Coreopsis, Delphinium, Dianthus, Dicentra formosa, Digitalis, Echinacea, Echinops, Gallardia, Gaura, Geum, Helenum, Heliopsis, Penstemon, Phlox maculata, Platycodon, Nepeta, Salvia nemorosa, Scabiosa, Stokesia, Tradescantia, Viola. Be sure to select cultivars that readily re-bloom.
  48. 48. MAY-JUNE ZENITH OF BLOOM AUGUST RE-BLOOM JULY GETTING TIRED ‘Carradonna’ and ‘May Night’ are better re-blooming Salvia varieties.
  49. 49. PERENNIALS TO PRUNE FOR IMPROVED FOLIAGE/OVERALL APPEARANCE Achillea, Alcea, Alchemilla, Anemone, Arabis, Armeria, Artemesia, Aruncus, Bergenia, Brunnera, Campanula, Chrysogonum, Coreopsis, Delphinium, Dianthus, Dicentra, Echinacea, Echinops, Geranium, Helenum, Heliopsis, Helleborus, Hemerocallis, Heuchera, Hosta, Iris (bearded), Kniphofia, Leucanthemum, Monarda, Nepeta, Peony, Penstemon, Phlox, Physostegia, Polemonium, Pulmonaria, Salvia, Scabiosa, Stachys, Tradescantia, Veronica, Viola. When in doubt… if it looks bad cut it off!
  50. 50. BEFORE AFTER
  51. 51. DURING BEFORE AFTER
  52. 52. PERENNIALS TO TRIM FOR HEIGHT CONTROL/SHAPE/BLOOM SEQUENCING Achillea, Aconitum, Adenophora, Alcea, Artemesia, Aster, Boltonia, Echinacea, Eupatorium, Gaura, Helenum, Helianthemum, Heliopsis, Hibiscus, Lavender, Lobelia, Lychnis, Monarda, Perovskia, Phlox, Physostegia, Platycodon, Rudbeckia, Sedum Autumn Joy, Solidago, Tradescantia, Veronica. *Trimming may delay flowering. *Timing greatly affects eventual outcome.
  53. 53. Now go outside and have fun in the dirt. Thank you! 16540 CHILLICOTHE RD CHAGRIN FALLS, OH. 44023 440-543-5123 WWW.LOWESGREENHOUSE.COM

×