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Scott from Shepherdsville Ky writes

Can I mix Miracle grow with Helena Crossbow Herbicide?

I’m spraying my pastures Thursday and I could only find 2 gallons of liquid nitrogen. But I did find miracle grow cheap so I bought 4 boxes. Will it hurt anything. I saw a warning using Npk. What do you think.


Crossbow may be combined with liquid nitrogen fertilizer suitable for foliar application to accomplish weeding and feeding of grass pastures in one operation per the product label. Use Crossbow in accordance with recommendations for grass pastures as given on this label. Use liquid fertilizer at rates recommended by supplier or Extension Service Specialist. Test for mixing compatibility using desired procedure and spray mix proportions in clear glass jar before mixing in spray tank. A compatibility aid such as Unite or Compex may be needed in some situations. Compatibility is best with straight liquid nitrogen fertilizer solutions. Mixing with N-P-K solutions or suspensions may not be satisfactory even with the addition of compatibility aid. Premixing Crossbow* with 1 to 4 parts water may help in difficult situations. Fill the spray tank about half full with the liquid fertilizer, then add the herbicide with agitation and complete filling the tank with fertilizer. Apply immediately and continue agitation in the spray tank during application. Do not store spray mixture. Application during very cold weather (near freezing) is not advisable.

Answer last updated on: 03/31/2020

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