Horticulture Quiz and Answers

Test your knowledge of horticulture with this fun quiz.

Created on January 15, 2023 By

Robert Silver

Horticulture Quiz

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1. What do we call cuttings taken from mother plants?

Phenotypes

Genotypes

Clones or starts

Babies

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2. How early will you know the sex of a cannabis plant?

When the plant is three months old

When the plant is one month old

During the first two weeks of flowering

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3. Which one is a member of the “goosefoot” family?

Spinach

Sorrel

Asparagus

Lettuce

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4. What does PPM stand for?

Parts per million

Plant particle measurements

Perfect plant material

Plant photosynthesis method

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5. What is the acceptable humidity level of a grow room?

75 to 85%

30 to 50%

20 to 30%

10 to 20%

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6. When should you harvest?

When the pistils turn red

When plants are 6 feet tall

When the calyxes enlarge

When growth stops

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7. When preparing nutrients, you should ——

Use hot water

Use cold water

Put nutrients individually, then test the PH

Change PH then, add nutrients

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8. Which of these is least harmful?

Amphids

White fly

Thrips

Spider mites

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9. A sulfur burner is used for?

Spider mites

Powdery mildew

Aphids

Lack of nutrients

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10. Vegetable plants require how many hours of light?

6 hours

12 hours

18 hours

14 hours

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11. How many hours of darkness are necessary for flowering?

At Least 12 hours

3 hours

6 hours

10 hours

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12. How do you differentiate Sativa from indica?

Flowering times and plant height

Sativa requires more water

Indica requires more light

Indica uses more nutrients

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13. Charcoal filters are used for?

Changing cannabis flavor

Eliminating odor

Filtering airborne diseases

Filtering water

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14. Which is the first sign that indicates the presence of spider mites?

Brown leaves

Webbing

White dots on leaves

Little black insets

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15. Which amaranth variety is used to make dyes?

Pusa kirti

Pusa kiran

Pusa lal chaulai

Sirukeerai

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The average score is 25%

Robert Silver

Robert Silver is a writer, speaker and certified master gardener who has been sharing his landscaping experiences through personal blogs. Taking it to the next level, Robert Silver has come up with this progardeningblog.com to shine a light on new planters and experts, discussing plants, landscape projects and much more. He has published numerous research articles on horticulture that have helped many people attain fruitful outcomes.