I am sorry for this delayed reply to your gardening question. The spring rush has brought a deluge of questions and we are working hard to catch up!
Deer sprays tend to last varying times due in part to weather and in part to how hungry the deer are. Sprays of egg solids, hot pepper oil and other such ingredients are available and may help some, especially when the deer "pressure" is not too high. Human hair (from the local barber shop) in bags made of hosery and perfumed soaps have worked for me when they had other options to feed upon. Finally, here are some sites that may help you find those plants they prefer to avoid. Keep in mind that plants recommended for another part of the country may not do well in your area:
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
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