These days, there are several reasons to hesitate. Bone meal is simply not the best source of phosphorus for the garden, not because it doesn’t contain a lot of phosphorus but because it delivers it into the soil inefficiently. This is especially true of bone meal that has been processed by methods such as chipping or microwaving, instead of the old-fashioned steam treatment. Secondly, putting bone meal in your bulb bed is often an invitation for dogs, squirrels, voles, moles and other critters to sniff it out and dig up your garden.
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