If properly acclimated it can be put out early in the spring, will also tolerate light frosts. I use to grow this plant in cold frames along with Petunias and Viola. (Zone #5)
Flowers
The white flowers are can reach 4" long and are made up of a fused corolla tube with, five angular calyx. Many types are fragrant.
Leaves
The leaves are large, sessile, somewhat wavy and slightly clasping the stem.
Dimensions
I have seen this plant as tall as 5'. Can be planted 12-18" or more on center.
Maintenance
if grown in shade they may need to be staked, will readily reseed
Propagation
By seeds or collecting the seedlings that pop up in the garden in the spring.
Misc Facts
Nicotiana sylvestris is native to Argentina. Sylvestris means "of the woods". The dried seed pods can be used in everlasting bouquets, somewhat wavy and slightly clasping the stem
Author's Notes
I really like using this plant when I need a large flowering annual for a specimen or back of the border.
Notes & Reference
#48-Harrowsmiths Annual Garden (Bennet and Forsyth),#51-Armitage's Manual of Annuals, Biennials, and Half-Hardy Perennials (Alan Arimitage), #109-Annuals and Tender Perennials for North American Gardens (Wayne Winterrowd)