Bottom Watering vs Top Watering Plants: Which Is Better?

The Short Answer

Neither method is universally better — both have distinct advantages, and the best approach depends on your plant type, pot setup, and goals. Most experienced plant owners use a combination of both techniques.

What Is Top Watering?

Top watering is the traditional method: pouring water directly onto the soil surface using a watering can until it drains from the bottom. It's the most common method and works well for most plants.

What Is Bottom Watering?

Bottom watering involves placing the pot in a deep plant saucer filled with water and allowing the plant to absorb moisture upward through the drainage holes via capillary action.

Top Watering: Pros and Cons

Pros

• Flushes the soil, removing salt and mineral buildup from fertilizer
• Faster — takes seconds per plant
• Works for all pot types and sizes
• Allows you to see exactly how much water you're adding

Cons

• Can compact soil over time
• Keeps the soil surface moist, encouraging fungus gnats
• Water may not reach the bottom of the root zone if soil is compacted
• Can wet leaves and cause fungal issues on sensitive plants

Bottom Watering: Pros and Cons

Pros

• Encourages deep root growth toward the water source
• Keeps the soil surface dry, reducing fungus gnats
• Plant absorbs only what it needs — reduces overwatering risk
• Ideal for plants sensitive to wet leaves (African violets, succulents)
• Prevents soil compaction

Cons

• Slower — takes 20–30 minutes per session
• Doesn't flush the soil (need to top water occasionally to remove mineral buildup)
• Requires pots with drainage holes and appropriate saucers
• Not practical for very large pots

Which Plants Prefer Bottom Watering?

• African violets
• Succulents and cacti
• Seedlings and young plants
• Plants prone to fungus gnats
• Plants with dense foliage that makes top watering difficult

Which Plants Prefer Top Watering?

• Most tropical foliage plants (pothos, philodendrons, monsteras)
• Large plants in big pots
• Plants that need frequent flushing (heavy feeders)
• Orchids (water directly on the potting medium)

The Best Approach: Use Both

The most effective strategy is to combine both methods. Bottom water regularly to encourage deep roots and keep the surface dry, and top water every 4–6 weeks to flush mineral buildup from the soil. Use a soil moisture meter before each watering session to confirm the plant actually needs water, regardless of which method you use.

Final Thoughts

Bottom watering and top watering are complementary techniques, not competitors. Use bottom watering for sensitive plants and to encourage deep roots; use top watering to flush the soil and for large pots. Check soil moisture before every watering with a moisture meter. The combination gives you the best of both worlds.