Hardyness zones are an indication for the average lowest temperature in a specific area.
Almost all bulbs do well in US zones, but some bulbs need special treatment in extreme heat or cold area's.
Take your zone into account when buying bulbs but be aware that your
zone is an indication and that specific situations in your garden can
create micro climates that deviate from the hardyness indicated.
All Fall
outdoor items will be shipped by zone, unless you indicated you want them ASAP or on a specific date.
Tis to ensure that they do not arrive before you can actually plant them.
Take the following start shipment dates into account per zone:
Zone 3/5 - Sep 1st
Zone 6/7 - Sep 15th
Zone 8/9/10 -Sep 30th
Some products won't be available before mid September, regardless of zone, see product details.
Indoor items will be shipped according to product availability.
Check Your Zone 
