Make sure that any wreaths, roping and garlands that you bring indoors are as fresh as possible. Check needles by bending them. They should be flexible and not break. Avoid greenery that are shedding or that have brown, dry tips. Before bringing the greenery inside, soak them in water overnight to rehydrate them.
Commercial sprays are available that can be used to provide some fire resistance.
Never place fresh greenery near heat sources, such as space heaters, heater vents or sunny windows. Be careful of wreaths used on the front door, if there is a glass outer door that receives direct sunlight. Keep greenery away from candles and fireplaces. If you use lights near your green arrangements, make sure that they stay cool, and if outside, that they are rated for exterior use. Check your decorations every couple of days for freshness.