Bump.

Why Ironite? A 40lb bag of 1-0-1 Ironite contains 4.5% iron. That's 1.8lbs iron, 0.4lbs nitrogen at a cost of $18. A 50lb bag of 5-2-0 Milorganite contains 4% iron. That's 2lbs of iron and 2.5lbs of nitrogen (60% of which is WIN "organic" which will promote micro-organisms and a healthy lawn) at a cost of $16. At the Ironite recommended application rate of .45lbs per 1000 sq ft., it will cover 4000 sq ft. At that same .45lb rate, the Milorganite bag will cover 4400 sq ft. plus you get all of the additional nutrient advantages. Home depot sells 40# bags of Ironite in my area for $18.67 and 36# bags of Milorganite for $12.37 (which is highway robbery). Even so, you are paying 10.37/lb of iron with Ironite and only $8.59/lb of iron with Milorganite. I have never watered Milorganite in and I regularly spot spray with WBG with no issues. Something to consider.

Ironite gets a bad rap for its trace heavy metals. Besides Iron, the signifcant heavy metals in Ironite are Lead and Arsenic. Sounds bad, right? But not so fast. First of all, the lead and arsenic in Ironite are chemically bound up in a form that even if you took ironite directly into your mouth and ate some, you would not adsorb any significant amount of lead or arsenic, since they are bound up and are NOT bioavailable. Second, the amount of lead and arsenic is so low, that if you put Ironite on your grass, shrubs, fruit trees, and similar things and you used double the recommended amount, it would still take 50 years for the arsenic to build up to levels that would be 'cautionary' (though still not necessarily poisonous) and 250 years for the lead levels to build up to a similar degree. AND EVEN THEN, IT STILL WOULD NOT BE A PROBLEM, UNLESS THEY SOMEHOW LEACHED OUT OF THEIR CHEMICAL BINDINGS AND BECAME BIOAVAILABLE. This is unlikely to happen, since the soil itself continues to bind them and adsorb them, so they don't become bioavailable. The point is when you hear words like LEAD and ARSENIC, is sounds scary, but the amounts in Ironite AND the bioavailability are far below scary. It is true they have been regulated in some places, like Canada, out of a sense of hypercaution, but that doesn't necessarily make them bad. AND, the fact that lawsuits have been filed against Ironite does NOT mean that those lawsuits had merit or that the people who filed them "won." To the best of my knowledge there has never been a successful lawsuit of any type against them, Because the science of it all is really on their side. I don't use Ironite on my grass. But I do use it in my garden, particularly around my fruit trees sometimes, since our soil has iron in it, but the iron is also bound up in a way that it is not bioavailable to the fruit trees, so Ironite helps them. I never give it a second thought, because the science on its safety is very clear.

Winter damage is not likely to be cured or even helped by applying any Ironite at all. Be patient and see how things develop. Cold may have killed the flower buds for this year, but the plants themselves will likely recover. Avoid trying to push things by using fertilizer.