Which plants grow best in acidic soil?

Published: August 27, 2025
Updated: August 27, 2025

Plants that thrive in acidic soil habitats can prosper in soils with pH levels below 7. Many gardeners encounter these conditions naturally. These conditions can be used in their favor. Specific species favor certain soils. Many of the plants included in these categories are popular ornamentals and edibles, and they actually perform better in these soil types than others.

To know the acidity of your soil, you need to test it. Good kits are available at local garden centers. Soil pH is measured on a scale of 0 to 14. Any value below a pH of 7 indicates acidic conditions. You will typically encounter these acidic soils in pine forests or in areas with high rainfall. It is essential to understand that acidic soils originate from granite bedrock and the decomposition of organic matter.

Edible Favorites

  • Blueberries need pH 4.0-5.5 and full sun
  • Strawberries produce best at pH 5.4-6.5
  • Potatoes resist disease in acidic conditions

Ornamental Stars

  • Azaleas bloom in shades of pink and white
  • Rhododendrons offer evergreen structure year-round
  • Camellias produce winter flowers in mild climates

Ground Solutions

  • Ferns create texture in shady acidic spots
  • Winter heath blooms during cold months
  • Pachysandra controls erosion on slopes
Acidic Soil Plant Comparison
PlantBlueberrypH Range4.0-5.5SunlightFull sunUSDA Zones
3-7
PlantAzaleapH Range4.5-6.0SunlightPartial shadeUSDA Zones
5-9
PlantCamelliapH Range5.0-6.5SunlightMorning sunUSDA Zones
7-9
Test soil pH annually for optimal results

Utilize organic amendments to maintain acidity. A good option is to apply elemental sulfur at a rate of 1 pound per 100 square feet. Another option is to incorporate peat moss into planting beds. Pine needle mulch helps retain moisture and additionally lowers the pH slightly. Do not use lime, as it will increase the pH.

Layer your landscapes. Start with tall rhododendrons, topped with medium-sized azaleas underneath, and then continue vertically with a shrub that is either lower or an ornamental plant. You can even layer it with blueberries or ferns. Consider layering for color schemes as well - blue hydrangeas are lovely beneath yellow hostas. Layering maximizes visual impact.

To begin, I suggest testing your soil this weekend. Choose one acid-loving edible or shrub, and plant it. You'll get to see how it grows throughout the season. It's a process of learning through experience, and you'll likely build confidence in your ability to work with your natural soil conditions.

Read the full article: 10 Acidic Soil Plants That Thrive

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