Is the problem TNM?....or is the problem calendar planting?
IF you pay close attention to your native cool season plants over time a few things will become consistent: 1) cool season plant emergence in Nature doesn't follow a calendar it follows climate, weather and field conditions, 2) cool season perennials break dormancy 1 or more weeks ahead of cool season annuals during late summer due to their stored root reserves, 3) cool season annuals emerge as new seedlings over several months during late summer, fall and winter because they don't have root reserves, and 4) not every cool season plant will appear every year....some years just are poor for some species. Dry years, wet years, high pressure warm fronts, cool fronts, rainfall timing, rainfall pattern, early frost, late frost, existing biomass, etc all interact and determine the cool season plant growing season and plant composition! Diverse seed mixtures lower the risk of total failure....leverage your planting by using diversity and pay attention to current conditions!
So why in the world do we fret when we can't grow something on 'our calendar'?....you have months to get it done....and some of what you plant may do better than other species! Did you diversify the mix? Did you consider conditions? Do you have a back up plan for failure?
IF your cool season plants haven't emerged, then don't fret as you have warm season forbs which can be managed....and this is what the deer will be using anyway until and while mast becomes available. Clip the top of some ragweed etc to stimulate new growth....forbs are tough plants and pretty good at working under dry conditions....manage what you have until you get conditions for what you want.....the animal is using what you have at any gives time, yet the animal doesn't live by 'hope'....we are the ones who live by 'hope'!
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