“This is the 2nd lavender I am having problems growing. I can pull up part of it like it’s rotting. What am I doing wrong? There is another Lavender about 3 feet away that is looking great.” Question from Jacklyn of Portland, Oregon
Answer: When lavender (Lavandula spp.) struggles, it is almost always due to a problem with soil quality and drainage. If fungal rot has taken hold, it is definitely caused by excess soil moisture. The frequent rains of the Pacific Northwest make it even more important to give your lavender very sharply drained soil. The difference between soil from one garden spot to another can be quite dramatic, even if they are only 3 feet away.
Lavenders naturally grow along sunny uplands with very well-drained soil, and they require full sun. If the soil is too moist and does not drain fast enough, rot will take hold. I encourage you to read our article titled, Soil Matters to Lavender; it will give you all of the information you need to properly amend your soil for lavender growing. You might also consider growing lavender in large containers and cutting their mix with part Black Gold All Purpose Mix and part Black Gold Cactus Mix. Topping the pots off with decorative pebbles would also be helpful.
I hope that these tips help!
Black Gold Horticulturist