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What is an Allergy?
 Caused
by a protein from a plant or
animal that interacts with a persons super
sensitive immune system.
 Yes people can be allergic to house
plants .The plants that cause the most
trouble are Ficus (weeping Fig) and
Abutilon ( flowering Maple)
 However
Plant Allergies
 Most
people who react to houseplant are
reacting to the mold that is in the soil
 Or wind borne pollen. Since most
houseplants are not wind pollinated, this
would be worse if one is outside during
pollen release.
 Common offenders: Rag weed, Pines,
grasses
Contact Dermatitis
oxalates in plant cells most
irritating

Irritancy is mechanical in part and due to the
anatomically sharp structure of the crystals
themselves. The crystals are believed to be more
irritant when longer than 180 µm.[21] The raphides
of calcium oxalate have been classified
historically as a chemical irritant mainly because
they allow the penetration of other plant chemical
toxins (including proteases, saponins, and other
chemicals) that may not normally breach the skin
on contact. They also enhance the penetration of
known skin irritants, including many alkaloids from
daffodil bulbs, bromelain in pineapples, and
saponins in Dieffenbachia.
The healthiest houseplants for
your home
 Houseplants
give off oxygen and help
remove chemicals like formaldehyde, a
common indoor vapor that can cause
respiratory and neurological problems, as
well as cancer,” he says. These five great
picks may not cure asthma, but they can
help you breathe easier.
 English Ivy, Bamboo Palm, Peace lily,
Spider plant, Rubber plant
Reasons for pruning
 Prune
to promote plant health
 Remove
dead or dying branches injured
by disease, severe insect infestation,
animals, storms, or other adverse
mechanical damage.
 Remove branches and branch stubs that
rub together.
Prune to maintain plants
encouraging
flower and
fruit development
maintaining a dense hedge
maintaining a desired tree
form or special garden
forms
Narrow angles
Water sprouts
Crossed
branches
Saw
Snippers or
pruners
Pole Trimmer
Lopper
Apple that needs pruning
Before
After
Spurs or
short stems
Long stems
cuts
This pear tree now has a new leader. The making the tree 3’shorter
Pruning evergreens



Trees that have needles in fascicles ( red pine,
white pine, Mugo pine) get pruned into only
he new wood when the candles are ¾ grown.
In Duluth that is often Grandmas Marathon
weekend. Clip candles back and they will be
able to branch from there next year.
Prune trees with Awl shaped needles (white
cedar, red cedar) any time.
These trees can be thinned by cutting whole
branches at the trunk
Deciduous shrubs
 Unless
you have a formal hedge, head
back or thin stems from the base and
retain the natural shape of the plant.
 Common Lilacs have fewer flowers on
old wood so take out the old stems at the
base in the spring or after bloom. Trim off
old flowers just after the flowers start
senescing
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