08/18/2026
What is Foliar Spray?
Foliar spraying is the practice of misting a diluted fertilizer or plant supplement directly onto a plant's leaves instead of applying it to the soil. Many nutrients can be absorbed through the leaf surface, giving plants a quick boost.
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It doesn't replace regular watering or fertilizing through the roots—it's simply another tool that can complement a healthy plant care routine.
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Benefits of foliar spraying
🌿 Provides nutrients quickly because they're absorbed through the leaves.
🍃 Can encourage healthier foliage and stronger growth when used correctly.
✨ Helps plants recover after repotting, shipping, or other mild stress (once they're actively growing again).
🌱 Delivers nutrients even if the root system isn't absorbing efficiently.
💚 Great for products like kelp extracts, micronutrients, and some orchid fertilizers.
How to do it at home - It's very simple.
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Mix the product according to the label directions.
Pour it into a clean spray bottle.
Spray both the tops and undersides of the leaves until they're lightly coated—not dripping.
Spray in the morning or evening, avoiding sun or growlights being on.
Allow the leaves to dry naturally.
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How often? - For most houseplants, every 2–4 weeks is plenty unless the product recommends otherwise. More isn't necessarily better.
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What can you spray? - Many common houseplants respond well, including:
Pothos
Philodendrons
Monsteras
Hoyas
Orchids
Ferns
Carnivorous plants (only with products that are appropriate for them and at the correct dilution) minus Pings
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A few cautions - Never spray plants sitting in direct, hot sunlight, as wet leaves can be more prone to damage.
Don't use stronger concentrations than recommended.
Skip spraying fuzzy or hairy leaves (such as many African violets), since they can hold moisture and develop spotting or rot.
If you're trying a new product, test it on one or two leaves first.
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I brought in some kelp fertilizer to foliar spray the venus fly traps and sundews. Comment "Kelp" and let me know if you'd try this method, or have already.
Mystic Plant Room
