What plants should avoid acidic soil?
Written by
Olivia Mitchell
Reviewed by
Prof. Samuel Fitzgerald, Ph.D.Some plants have considerable difficulty growing in acidic soil with a pH below 6.0. Alkaline-loving plants, such as lavender and clematis, will be deficient in nutrients in a low pH environment. Their roots can't take up phosphorus and manganese fast enough to satisfy their needs. You will notice stunted growth and yellowing leaves as obvious signs of distress. These plants require a narrow range of soil conditions to thrive.
Ideal Conditions
- Maintain soil pH between 6.5-7.5 for optimal growth
- Ensure good drainage with sandy loam soil mixtures
- Provide full sun exposure for most alkaline-loving plants
Common Issues
- Iron chlorosis causing yellow leaves in acidic conditions
- Phosphorus deficiency limiting flower production
- Manganese toxicity damaging root systems
Solutions
- Apply garden lime to raise soil pH gradually
- Use balanced fertilizers with higher phosphorus content
- Amend soil with wood ash for natural alkalinity
Establishing the proper soil environment helps prevent some common growth problems with these kinds of plants. Lavender requires well-draining soil, which is unsuitable for root rot in wet conditions. Clematis prefers continuous moisture but struggles in poorly drained, acidic soils. Boxwood tolerates a wider variety of soils than any other plant on this list. Still, it does have a preference for alkaline soils. Lilacs actually produce fewer blooms in acid soils.
Knowing all of this can help you avoid letdowns. Alkaline soil plants have their own unique strengths, like lavender's ability to repel most animals and insects alike. They provide contrast through their varied textures and shapes. Good soil management helps maximize their performance and life span. Each garden gains diversity through the selection of suitable plants.
Read the full article: 10 Acid Loving Plants for Your Garden
