Be very careful to read the ordering instructions on each site. Be aware of substitution, out of stock, and wait-listing policies. If you can't get the plant this year most firms will put you at the top of the list for next year's first babies. But when in doubt always email, write, or call for a clarification. If you are ordering late in the year it is a good idea to call to be sure that the stock was exhausted with the first spring orders.
Some companies can fax, email, or post a list of stock available for immediate shipment.
Nurseries with computerized inventory software are often willing and able to reserve or presell plants that are still in propagation or planned for the next operation. Much of the dissatisfaction between grower and gardeners comes from a lack of communication or simply communicating with an unjustified negative attitude by either party. Be nice, professional, specific, and persistant. Nurseries find that people frequently forget what they ordered, particularly if orders are spontaneous. The New Ornamentals Society will actively pursue all complaints concerning unfilled, misfilled, and lost orders with the nursery in question.