Foliar Spray
✦ Free ForeverStage-specific spray that feeds through leaves — faster than roots, measurable boost to yield and quality. Source: Van Patten, Gardening Indoors with Soil & Hydroponics.
What is Foliar Spray?
A supplemental feeding method where nutrients are sprayed directly onto leaves — not into the reservoir. Apply once a week at 100% strength, early morning or evening to avoid leaf burn. This works alongside, not instead of, your reservoir formula. (Source: Van Patten, Gardening Indoors with Soil & Hydroponics)
Frequency: Once a week · Strength: 100% · pH: 5.5–6.5
Frequently asked questions
What is foliar spray in hydroponics?
Foliar spray is a supplemental feeding method where a dilute nutrient solution is misted directly onto the leaves. Nutrients absorbed through leaf stomata reach the plant faster than those taken up by roots, which helps correct deficiencies quickly and give a measurable boost to growth and yield.
How often should I apply foliar spray?
Once a week is typical, applied at 100% strength. Spray in the early morning or evening — never in direct midday sun — to avoid leaf burn.
Does foliar spray replace reservoir nutrients?
No. Foliar feeding works alongside your reservoir formula, not instead of it. The roots still do most of the feeding; the spray is a supplement.
What pH should a foliar spray be?
Aim for pH 5.5 to 6.5 so nutrients stay available and the leaf surface isn't stressed.
Is the foliar spray calculator free?
Yes — it's free forever. Sign up for a free account to unlock the stage-by-stage spray amounts. No subscription required.