Lavender only requires minimal fertilization occasionally. While coffee grounds can stimulate its growth, they can also harm the plant if used improperly.
If you regularly enjoy coffee, don’t throw away the coffee grounds; instead, use them wisely to fertilize your plants. But how does lavender respond to this Mediterranean plant?
The Benefits and Drawbacks of Coffee Grounds
Coffee grounds can be a great alternative to traditional fertilizers if your lavender soil is depleted. They offer several advantages:
- Easy to dose
- Rich in nitrogen, potassium, and phosphorus
- Helps keep pests away
However, lavender is somewhat frugal in its nutrient needs. It does not tolerate excessive coffee grounds because they can lower the soil’s pH. While acid-loving plants like hydrangeas, rhododendrons, azaleas, and blueberries thrive in acidic conditions, lavender prefers slightly alkaline to neutral soils. Therefore, caution is advised when using coffee grounds as fertilizer.
Coffee Grounds: A Long-Term Fertilizer
The nutrients from coffee grounds gradually permeate the soil and, with the help of water, reach deeper layers. This allows lavender to access new nutrients for several weeks.
Important Steps for Using Coffee Grounds:
- Dry the coffee grounds thoroughly.
- Finely crumble the coffee grounds with your hands.
- Spread the coffee grounds on the soil and press them flat (avoiding damage to the lavender roots).
- Water the lavender after application.
How to Measure Coffee Grounds Correctly
When fertilizing lavender, remember: less is more. You should apply coffee grounds only once a year. If you want to supplement, you can add a small amount to the soil once or twice a month.
Ideal Time to Fertilize Lavender
The best time to fertilize your lavender with coffee grounds is before budding. The period between early March and April is ideal, giving the plant a robust start for the new growing season.
By following these guidelines, you can effectively use coffee grounds to nourish your lavender without risking its health!
