It is best to plant your bulbs soon after they arrive. If you must delay planting, it is important to maintain the quality by opening the boxes so air can circulate and then place them in a cool and dry environment.
Temperature extremes will seriously decrease the viability. When planting make sure to follow proper planting instructions that are included in your delivery. Planting too deep or shallow will affect bulb performance.
Make sure there is good drainage so the bulbs do not rot. Success starts with quality bulbs and finishes with quality care.