The main plants that do not like bottom watering are orchids, large aroids, cacti in deep pots, and any plant grown in chunky bark mix. These plants block water uptake from below or have roots that need air contact to stay healthy.
I tried to bottom water my 3 foot (90 cm) Monstera in aroid mix last spring. The pot sat in 2 inches (5 cm) of water for over an hour with no change at all. The top of the soil stayed bone dry and the water level in the tray barely dropped.
That moment taught me a key lesson about chunky soil mixes. Orchid bark, pumice, and perlite chunks leave big air gaps between the bits. Water cannot climb up through these gaps since capillary action needs tight fine soil to work right.
Foliage Factory lists five main groups of plants to avoid bottom watering for good reason. Each group has its own quirk that breaks the soak method, so you need a different approach for each one.
Orchids and Epiphytes
- Why they fail: Orchids grow on tree bark in the wild and their roots need air contact for at least 70% of the day.
- Watering fix: Use the soak and drain method in the sink for 15 minutes once a week, then let pots fully drain.
- Warning sign: Mushy green roots mean too much water, while gray and shriveled roots show your plant needs more soak time.
Large Aroids and Anthurium
- Why they fail: Monstera, Philodendron, and Anthurium grow in chunky aroid mix that blocks capillary water uptake.
- Watering fix: Top water until you see drips from the drain holes, then dump the tray to skip any standing water.
- Warning sign: Dry top soil after a long soak means the chunky mix did not wick water up to the root zone at all.
Deep Potted Cacti
- Why they fail: Tall cacti in deep pots need a fast water move through that bottom watering cannot give them.
- Watering fix: Soak the pot in the sink for 5 minutes once every 3 to 4 weeks, then let drain for a full hour.
- Warning sign: Yellow or soft base on a cactus means the roots got too wet for too long in any watering setup.
Ungerminated Seeds
- Why they fail: New seeds need surface moisture to crack open, but bottom watering keeps the top soil layer dry.
- Watering fix: Mist the top of the seed tray twice a day with a spray bottle until the first sprouts appear.
- Warning sign: No sprouts after 10 to 14 days means your seeds dried out on top and need a top water plan.
You can spot which plants that prefer top watering in your own home with one simple check. Look at the soil mix in each pot for chunky bark, perlite, or pumice bits. If you see lots of big chunks over half an inch (1.3 cm), that plant will not bottom water well at all.
Deep pots over 8 inches (20 cm) tall also struggle with the soak method even in fine soil mix. The water has to climb too far up to reach the root zone before the soak time runs out. I keep all my deep pots on a top water plan to save myself the trouble.
My old fix for the Monstera I mentioned took just one tweak to the routine. I now top water it from above until water drips out the bottom drain holes. The whole job takes 2 minutes instead of an hour, and the plant has pushed out 5 new leaves in the past three months.
Your snake plants and ZZ plants can go either way based on their pot size and soil mix. I bottom water mine in 4 to 6 inch (10 to 15 cm) pots with fine mix, but I top water the bigger pots in chunky mix. Test one of each in your collection to see what works best.
Match the watering method to the plant for the best results across your whole home. Bottom water fine soil with surface roots, top water chunky mix and deep pots, and mist new seeds from above. Once you sort your plants into these three groups, your weekly water chore gets much faster.
Read the full article: Bottom Watering Plants: 8 Pro Tips
