Preparing your urban planter boxes for a new planting season is a rewarding ritual that sets the stage for success. Begin by removing all old plant material, including roots and debris. This prevents disease and pest carryover. Next, assess and refresh your soil. Over time, soil becomes compacted and depleted. Remove about the top one-third to half of the old potting mix. Replace it with a high-quality, fresh potting mix to restore nutrients and improve drainage. If the soil is very old or plants were previously diseased, a complete replacement is best.
Thoroughly clean your planter boxes with a solution of one part vinegar to nine parts water. Scrub the interiors to remove salt deposits, minerals, and any lingering pathogens. This step is crucial for the health of your new plants. Check for proper drainage by ensuring the holes at the bottom are clear. Add a layer of small stones or broken pottery shards if needed to prevent clogging.
Before planting, plan your layout. Consider sunlight, plant height, and companion planting. Moisten the fresh soil mix before adding your seeds or seedlings. Finally, apply a layer of mulch, such as shredded bark or straw, to conserve moisture and suppress weeds. With your planter boxes refreshed and ready, you can look forward to a vibrant and productive season of urban gardening.