Conifers in Shallow Concrete-Bottom Planter: Certain Failure

Fatal Design Flaws

• Concrete bottom = zero drainage = root rot.
• 9″ depth = insufficient for any tree root system.
• 52″ length = narrow column of wet soil.

Result

Browning from base up = classic drowning/root rot. Trees cannot survive.

Alternative Plantings

• Shallow-rooted perennials: sedums, creeping thyme, ice plant.
• Annuals: petunias, verbena, calibrachoa.
• Succulents: sempervivum, echeveria (if drainage added).

If You Must Have Woody Plants

Dwarf boxwood, compact hollies, or creeping junipers in DEEPER containers (18″+ min) with drainage holes.