ICL - 15-0-15 Peters Dark Weather Feed 25 lb. (haz)

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High-nitrate, low phosphate customizing component for bulbs or other plants needing higher levels of calcium, magnesium, and growing media pH. Recommended for wintertime applicatio n, when temperatures are cool and ambient light is low. With a high potential basicity, 15-0-15 is useful for raising growing media pH. Great fertilizer for soilless mixes. Show more