WorksheetsHorticulture Interior Landscaping Study Guide Questions
Total questions: 22
Worksheet time: 11mins
Select all qualities of an ideal growing medium for indoor plants.
Well-drained
Good moisture-holding capacity
Good aeration
Provides support for the plant
High fertilizer content
Select the organic amendments for a growing medium.
Peat moss
Manure
Vermiculite
Perlite
Select the inorganic amendments for a growing media.
Peat moss
Manure
Vermiculite
Perlite
How does low humidity affect tropical plants and their growth?
Leaves become brittle or have burnt edges and new growth is stunted
Plants rapidly produce lush new leaves
Plants immediately flower more often
Fruit production increases indoors
Where would you most likely find a low humidity environment for indoor plants?
Indoors in winter when heating is running or when AC is running
A rainforest exhibit with misting
A greenhouse with frequent fogging
A coastal area during fog
What should be avoided when keeping plants indoors to help humidity levels?
Placing plants in drafts from fans or heaters that blow on them
Grouping plants together
Using a room humidifier near plants
Watering plants appropriately
What fertilizer requirements do tropical indoor plants need?
High levels applied frequently year-round
No fertilizer at any time
Low quantities, and if applied, do so in spring or summer
Weekly applications only when flowering
What is the first step one should take if their plants have a pest problem?
Quarantine the plant in a separate area
Apply a strong fertilizer
Increase watering immediately
Move the plant into direct sun
Which pest matches the description: white woolly mass that looks like a small cotton ball?
Mealy bugs
Scale
Aphids
Spider mites
Which pest matches the description: small, black, hard shell–shaped lumps on plant surfaces?
Mealy bugs
Scale
Aphids
Spider mites
Which pest matches the description: tiny soft-bodied insects, generally 1/16 to 1/8 inch long, pear-shaped with long antennae?
Mealy bugs
Scale
Aphids
Spider mites
Which pest matches the description: very small spider-like insects found all over the plant?
Mealy bugs
Scale
Aphids
Spider mites
Which indoor light source is more beneficial for tropical plants?
Fluorescent light, which is cooler, has a wider light range, and lasts longer
Incandescent light, which produces more heat for growth
Direct sunlight through glass at midday
Black light for ultraviolet exposure
Why can incandescent lights be harmful to tropical plants indoors?
They produce excess heat and not enough useful light, which can burn plants
They are too cool and prevent photosynthesis
They emit only blue wavelengths that stunt growth
They last too long and overexpose plants
What temperature range do tropical plants grow best in indoors?
Day 70 – 80 degrees and night 60 – 65 degrees
Day 50 – 60 degrees and night 40 – 45 degrees
Day 80 – 90 degrees and night 70 – 75 degrees
Day 60 – 70 degrees and night 55 – 60 degrees
Which statement best describes a Chilling Injury to tropical plants?
Damage occurs when temperatures dip to 35 – 45 degrees Fahrenheit, above freezing but still harmful
Sudden damage from drafts or improper chemical application
Damage developing slowly over time due to chronic issues
Wilting caused only by drought stress
Which statement best describes an Acute Plant Problem?
Sudden and immediate damage, such as from cold drafts, burning, or improper chemical use
Long-term decline from repeated overwatering or root damage
Damage only when frozen below 32 degrees Fahrenheit
Minor cosmetic issues that do not affect health
Which statement best describes a Chronic Plant Problem?
Issues that occur over a longer period, causing slow decline, such as from continual overwatering
Immediate leaf scorch from someone smoking nearby
Sudden pest outbreak from a single exposure
Short-term wilting that reverses overnight
What is Biological Control in a greenhouse?
Using one living organism to control another living organism
Applying synthetic pesticides on a schedule
Increasing fertilizer to strengthen plants
Replacing soil with sterile media
Which is an example of Biological Control used in a greenhouse?
Releasing ladybugs to eat aphids
Spraying a broad-spectrum chemical pesticide
Pruning off healthy leaves
Applying extra fertilizer to boost growth
When deciding how much to water a plant, what should guide the decision?
The size and type of the plant
The size of the pot only
The color of the leaves that day
The day of the week
Why is watering based on pot size instead of plant needs often harmful?
Soil in a large pot around a small plant may not dry between waterings, leading to root diseases and other pest problems
It encourages deeper roots and stronger stems
It ensures nutrients are flushed regularly
It increases humidity around foliage
