PlantBottom watering is a technique for wetting the mix. It is not a cure for overwatering or a reason to leave roots standing in water.
Understand the path water takes
When a nursery pot sits in a shallow reservoir, water enters through drainage openings and moves into the medium. How evenly it rises depends on the ingredients, how dry they are, and whether they contact the water. A very coarse mix may behave differently from a fine, fibrous one.
Use a separate clean container for soaking. Do not assume that water disappearing from the reservoir means every part of a large root ball is equally moist. Check the mix and pot weight before deciding the process is complete.
Use a monitored soak
Place a pot with open drainage holes in a shallow amount of water, keeping foliage and the plant’s crown above it. Check periodically and remove the pot when the root ball has absorbed enough moisture for that plant. Allow it to drain fully before returning it to its outer container.
There is no universal soak duration for all pots. Size, dryness, and medium matter. Do not leave a pot unattended for hours or turn a decorative cover pot into a permanent reservoir unless the plant is in a system designed for that purpose.
Know its useful limits
This method can help rehydrate a dry root ball or avoid wetting sensitive foliage. It may also reduce disturbance to a fragile soil surface. It will not fix a pot that is too large, a poorly aerated mix, or a plant receiving too little light.
Regular bottom watering can leave dissolved salts behind as water evaporates or is used. Where appropriate for the species and root condition, occasional thorough top watering with drainage helps move accumulated salts out. Consider your water quality and fertilizer routine together.
Avoid sharing problems between pots
Use clean water and containers, particularly if any plants show root disease or pests. Moving several plants through the same water can transfer unwanted organisms. Check each plant separately instead of soaking the whole collection by habit.
After changing technique, continue observing how long each pot takes to dry. PlantPal reminders can keep checks consistent, but the plant and medium still determine when the next watering is needed.