↵^z The following represent costs per tree (U.S. dollars): container-grown tree—$144; field-grown tree—$107; transporting trees 50 mi (80 km) and planting them—$145; staking container tree—$25; irrigating for 6 months twice weekly—$131; irrigating for 6 weeks, once per week—$22; MycorTree soil amendment—$8. Numbers based on average of three contractors’ prices. Applying MycorTree to backfill had no impact on any measured parameter so it was not included in this cost analysis.

↵^y Trees irrigated four times in first 9 days then twice weekly for 6 months. Five gal (18 L) water was applied to the top of the root ball at each irrigation.

↵^x Trees irrigated four times in first 9 days then once per week for 5 weeks. Five gal (18 L) water was applied to the top of the root ball at each irrigation.