It can take up to three years for a calla lily planted from seed to bloom.
Calla Lily Seed Info: How To Grow A Calla Lily From Seed How to Grow a Calla Lily From a Seed

Nasturtiums planted near tomatoes and cucumbers can fight off aphids, whiteflies, squash bugs, and cucumber beetles. The flowers, especially the yellow blooming varieties, act as a trap for aphids.
finegardening

brothernature - annuals
other possible flowers: schizantha (poor man orchid), polyanthus, painted tongue, Astilbe(perenial), statice, portulaca, candytuf (Iberis umbellata), stock, Nemesia, Viscaria, bee balm, Filipendula Venusta, Torch Tithonia(mexican sunflower, annual)
Lilies: mariposa (Calochortus), spider (lycoris)