Bonsai Fertilizer Quiz 1

April 4, 2025

How much do you know about bonsai fertilizer?

Discover the best fertilizers, techniques, and nutrients for perfect fertilization.

He bonsai fertilizer is one of the most important aspects for maintaining healthy, vigorous, and well-formed trees. Knowing how to fertilize a bonsai, choose the suitable type of fertilizer and applying the correct dose at the right time makes the difference between a weak bonsai and one full of life.

In this test on bonsai fertilizer You will be able to check how much you know about it fertilizing Japanese bonsai, the use of organic fertilizers and chemical fertilizers, the importance of NPK nutrient balance, the role of microelements, and the most advanced techniques such as foliar fertilizer or the bottom fertilizer.

Did you know that certain types of bonsai substrates require a specific fertilizer? Do you know the advantages and risks of using liquid fertilizers for bonsai versus solids? Do you know when to reduce nitrogen in your bonsai's fall fertilizer?

Take this test and find out if you've mastered the art of nurturing your bonsai trees like a true expert. You'll learn key points about:

✅ How to choose the best fertilizer for bonsai,
✅ When to fertilize bonsai according to the season,
✅ what type of fertilizer to use at each stage of cultivation,
✅ How to avoid nutrient blockages in the substrate,
✅ and much more.

Get ready to optimize the fertilizing your bonsais and achieve stronger, more balanced trees with spectacular growth. Start the quiz now!

Bonsai Fertilizer Quiz 1

1 / 20

What advantages do fertilizers with seaweed extracts offer?

They have a high concentration of phosphorus

They provide nitrate in pure form

They are specific for conifers

They stimulate the production of auxins and cytokinins

2 / 20

What form of nitrogen can cause substrate acidification over time?

Ammonium

Organic

Nitrate

Urea

3 / 20

Where does a leaf absorb nutrients during foliar fertilization?

By the main rib

By the stomata and the cuticle

Through the central limbo

By the petiole

4 / 20

Which of these amino acids is common in bonsai biostimulants?

Formic acid

Proline

Aspartate

Cysteine

5 / 20

What is the best time to apply foliar fertilizer?

At dawn

During initial sprouting

During storms

In the central hours of the day

6 / 20

What role do amino acids play in plant nutrition?

They activate metabolic processes and improve nutrient absorption.

They transport salts through the xylem

They increase the pH of the substrate

They stimulate photosynthesis

7 / 20

What type of nitrogen is most easily absorbed by the root?

Nitrite (NO2⁻)

Free ammonium

Nitrate (NO3⁻)

Urea

8 / 20

What are chelates in the context of plant nutrition?

Molecules that regulate pH

Nitrogenous salts

Complexes that stabilize micronutrients such as iron

Enzymes that degrade organic matter

9 / 20

What characteristics do liquid fertilizers have compared to solid fertilizers?

Slower release

Immediate release and greater control

Higher organic matter content

They do not require dilution

10 / 20

Which of these is not an essential micronutrient for bonsai?

Molybdenum

Cobalt

Zinc

Copper

11 / 20

Which of these is a controlled-release solid chemical fertilizer?

Worm humus

Osmocote

Fish mix

Hanagokoro

12 / 20

What disadvantage does foliar fertilizer have compared to root fertilizer?

Causes premature lignification

It has lower nitrogen absorption

It does not provide long-term nutrients

Does not contain amino acids

13 / 20

What is the main risk of using excessive amounts of liquid chemical fertilizers?

Salt accumulation and root burns

Substrate saturation with clays

Lack of absorption of micronutrients

Blocking photosynthesis

14 / 20

What is a base fertilizer in bonsai?

Fertilize with potassium nitrate in autumn

Slow-release solid fertilizer

Watering with seaweed extracts

Add iron at the end of the season

15 / 20

What can promote nutrient absorption by the leaf?

Use a wetting agent or surfactant

Water before fertilizing

Add elemental sulfur to the fertilizer

Use only distilled water

16 / 20

What C/N ratio is desirable in an organic fertilizer for bonsai?

Equal to 30

Greater than 20

Less than 10

It doesn't matter if there is humus

17 / 20

What factor improves the effectiveness of foliar fertilizer?

Use water with high calcium content

Apply it in direct sunlight

Apply it with mild temperature and high humidity

Spraying on dry leaves

18 / 20

What is the danger of poor bottom fertilization?

Magnesium leaching

Burning of new roots due to salt concentration

Sudden rise in pH

Budbreak shutdown

19 / 20

What happens if the substrate has high accumulated salinity?

Nutrient absorption is blocked

Improves micronutrient retention

Increases phosphorus absorption

Promotes flowering

20 / 20

What is an advantage of solid organic fertilizers for bonsai?

They contain high doses of ammoniacal nitrogen.

They improve substrate structure and microbial life

They have an acidic pH

They are immediate release

Your score is

The average score is 81%

20 Comments

Javier Caro - 4 de April de 2025

It's super interesting, thanks.

Reply
- Fran - 4 de April de 2025
  
  Thank you very much Javier
  
  Reply
Oscar Torres - 4 de April de 2025

Very interesting

Reply
- Fran - 4 de April de 2025
  
  Thanks Oscar!
  
  Reply
Jean-Pierre Shopkeeper - 4 de April de 2025

It's not easy, some words I don't know in Spanish, but well, actually I guessed it and it works, but this Quiz was not easy.

Reply
- Fran - 4 de April de 2025
  
  Very well done Jean Pierre, one more challenge for you regarding the language.
  
  Reply
Ivan Iglesias - 4 de April de 2025

Interesting for remembering concepts. Thanks!

Reply
- Fran - 4 de April de 2025
  
  Thanks! I'm glad you like it!
  
  Reply
Raúl - 4 de April de 2025

Thank you. It's good to learn a little more.

Reply
- Fran - 4 de April de 2025
  
  Thank you very much Raúl
  
  Reply
Alex Bumble - 4 de April de 2025

How much you learn with these tests

Reply
- Fran - 4 de April de 2025
  
  Thank you very much Alex, I'm very glad they help you learn.
  
  Reply
Agus - 4 de April de 2025

Interesting, I'll be keeping a close eye on it.

Reply
- Fran - 4 de April de 2025
  
  Thank you!!
  
  Reply
Antonio José Montero Pérez - 5 de April de 2025

These tests are a great idea for remembering concepts. 👌🏻
Thank you so much

Reply
- Fran - 5 de April de 2025
  
  Thanks so much, Antonio! Glad it helped you.
  
  Reply
Save - 5 de April de 2025

It's great, but phew, this one is costing me a little more hahaha

Reply
- Fran - 5 de April de 2025
  
  Thank you so much! The level is slowly rising 😉
  
  Reply
Eliseo Martinez - 6 de April de 2025

These tests help us refresh and teach us new concepts.

Reply
- Fran - 8 de April de 2025
  
  Thank you so much!!
  
  Reply