Case Studies and Concrete Examples
Examining real-life case studies offers valuable insights into the application of pH management principles in bonsai cultivation. Here are some concrete examples illustrating how proper pH adjustments can positively influence the health and aesthetics of bonsais.
A. Case of an Azalea (Rhododendron) with Foliar Chlorosis
Problem: An azalea exhibited signs of chlorosis, with yellowing leaves indicating iron deficiency.
Analysis: pH testing revealed an overly alkaline substrate (pH 7.5).
Solution: Introducing peat and watering with acidified water gradually lowered the pH to 5.0.
Result: The chlorosis diminished, and the azalea regained healthy growth.
B. Case of a Japanese Maple (Acer Palmatum) in an Urban Environment
Problem: A Japanese maple grown in an urban environment showed slow growth and pale leaves.
Analysis: Tap water used for watering was highly alkaline (pH 8.0).
Solution: Using rainwater and adjusting the substrate with pumice rebalanced the pH around 6.5.
Result: Improved vigor and leaf coloration.
C. Case of a Pine Bonsai with Weakened Roots
Problem: A pine bonsai showed signs of weak roots, with slow growth.
Analysis: The substrate was too acidic (pH 4.0) due to excessive use of peat.
Solution: Replacing part of the peat with akadama and adding lime to increase the pH.
Result: The roots strengthened, and the tree showed more vigorous growth.
D. Case of a Ficus Bonsai in a Controlled Environment
Problem: A Ficus bonsai in a greenhouse was not thriving despite seemingly optimal conditions.
Analysis: The pH of the automatic watering water was neutral, but the substrate had become acidified (pH 5.0).
Solution: Adjusting the watering system to include a slightly alkaline water conditioner.
Result: Improved growth and overall health of the tree.
These case studies demonstrate the importance of precise evaluation and management of pH in bonsai cultivation. They also highlight the significant impact that small adjustments can have on the health and aesthetics of bonsais.
