When your customer approaches you with questions about
growing a hedge as opposed to building a fence in their landscape,
the following are some of the annual’s that you could
recommend.  This is a general list, so check for your specific area,
or growing zone first.

Amaranthus                       Amaranthus spp.
Snowcup                              Anoda cristata
Prickly poppy                    Argemone spp.
Sweet wormwood             Artemsia annua
Spider flower                     Cleome hasslerana
Angel’s trumpet                Datura metel
Sunflower                             Helianthus annus
Summer cypress               Kochia scoparia
Tree mallow                        Lavatera trimestris
Castor bean                         Ricinus communis
Marigold                               T agetes spp.
Mexican sunflower           Tithonia rotundifolia