We also got some new chicks and I'm thinking of sprinkling some in with them too, actually.
Here is a partial list* of common herbs and flowers and their beneficial properties:
Basil - antibacterial, mucus membrane health
Catnip - sedative, insecticide
Bee Balm (bergamot/monarda)- antiseptic, antibacterial, respiratory health, calming
Cilantro - antioxidant, fungicide, builds strong bones, high in Vitamin A for vision and Vitamin K for blood clotting
Dandelion greens - immune system stimulant
Dill - antioxidant, relaxant, respiratory health
Fennel -laying stimulant
Garlic - laying stimulant
Lavender - stress reliever, increases blood circulation, highly aromatic, insecticide
Lemon Balm - stress reliever, antibacterial, highly aromatic, rodent repellent
Marigold - laying stimulant
Marjoram - lay stimulant
Mint (all kinds) - insecticide and rodent repellent
Nasturtium - laying stimulant, antiseptic, antibiotic, insecticide, wormer
Oregano - combats coccidia, salmonella, infectious bronchitis, avian flue, blackhead and e-coli
Parsley - high in vitamins, aids in blood vessel development, laying stimulant
Peppermint - anti-parasitic, insecticide
Pineapple Sage - aids nervous system, highly aromatic
Rose Petals - highly aromatic, high in Vitamin C
Rosemary - pain relief, respiratory health, insecticide
Sage - antioxidant, anti-parasitic, general health promoter
Spearmint - antiseptic, insecticide, stimulates nerve, brain and blood functions
Tarragon - antioxidant
Thyme - respiratory health, antibacterial, antioxidant, anti-parasitic
(WARNING: Pennyroyal, although part of the mint family, should never be used. The oil is toxic to chickens and it causes uterine muscles to contract in humans, so best to stay away from using Pennyroyal in and around the nesting boxes.)
Happy day, everyone!
* I will deny in no way that I took this info straight from Fresh Eggs Daily's post here