Are coffee grinds good for azaleas?

Here's why:

* Acidity: Coffee grounds are acidic, and azaleas prefer acidic soil. While a small amount might not drastically change the soil pH, consistently adding coffee grounds can make the soil too acidic, leading to nutrient deficiencies and stunted growth.

* Nitrogen: Coffee grounds contain nitrogen, but it's released slowly and not in a form that azaleas can easily absorb. This can lead to an imbalance in the soil, making it harder for the azaleas to access other essential nutrients.

* Molds and Pests: Coffee grounds can attract fungus gnats and other pests that can damage azalea roots. They can also promote mold growth, especially in moist environments.

Instead of coffee grounds, use:

* Acid-loving fertilizer: Choose a fertilizer specifically designed for acid-loving plants like azaleas, rhododendrons, and blueberries.

* Pine needles or compost: These are naturally acidic and provide beneficial nutrients for azaleas.

* Sulphur: If your soil is too alkaline, you can add elemental sulfur to lower the pH.

Remember to always test your soil's pH before applying any amendments.