I have another that I bought just like these and instead put it right into the ground outside. That one has flourished.

You must be somewhere warm. I look out my window and see a couple feet of snow! Mother Nature and outdoors is always the best place for herbs to grow. Good luck!

FataMorgana

Go for a walk and find a rosemary plant in someone's gardens ;) Brake few branches that are showing new growth (are green, not woody). Go back home, get sharp pair of scissors, cut below the node and remove some of the bottom leaves (around 2 cm). Mix compost plus perlite, make it free draining, rosemary does not like it too wet. Fill up your plug tray with the compost mix stick your cuttings in ant put it on sunny window seal :) In couple weeks you will have your own plant. Water it once a week, do not let it dry out before it roots and you will have your own plant :) Plants from groceries are not meant to live :))

I have never had much luck with cuttings and since the last time I tried to replant one of the grocery store rosemary plants and had success I figured that was the easiest route. I think I may just try to contain my impatience and wait till I can start some of the cuttings from my established outdoor plant. Right now its covered with about 3 feet of drifted snow. There is always these rosemary plants that I started from seed to place my hope into....

cuttings are prone to rot if the temp is lower then 20C and too wet. It helps to place it just above the radiator so the bottom of the cells would get heated. It induces rooting. But yes, it can be tricky. I tried 100 times and finally 101 it happened, since then, it works :) Keep records to see what are you doing wrong :) Or just try it from seed :)

In my experience, Rosemary bushes die in the winter here in Rhode Island. I have a bush in its second year in a 10 gallon pot next to a small window inside an unheated garage where it's doing well despite an unusually harsh winter. Because of the low temp it is barely growing. Thus it has kept its vigorous shape. Compare to bringing rosemary inside the house where the heat doesn't match the lack of sun -- and begins to look wimpy. My last outside overwintering rosemaries held out until the last month so my fingers are crossed (albeit with a confident carelessness). I hope my rosemary champion can make it through the last weeks because there's nothing quite like a well kept big, bushy Mediterranean rosemary bush during the height of summer. If this works I may try it again next year outside in the ground with its own cover, as it appears the freezing temps can be handled without humidity-leeching winds and battering precipitation.

I cant agree with bardamu_gw more. My outside bush is located near my grill. Always on hand there for those hot summer BBQs.

I will give the cuttings a try and post results here in the future. Thanks for everyones input and advice.

I start my rosemary cuttings in water. Your pot is way too big for the size of your plants. I would pot them into a 4" pot. One per pot. And they look over watered.

If you have the mother plant, layering or heel cuttings may be more successful propagation methods. On winter hardiness, yes, it can withstand freezing temperatures but it has it limits which does not include my zone 6 weather even for the hardiest of rosemary varieties "arp".

FataMorgana

I find rosemary cutting will root just by shoving trimmings in the ground in the garden. I totally agree that plants sold in shops for cooking are not going to be good for propagation. They are weak and sappy, having been forced for quick sale. You can tell this from your photo. A cutting from a tough outdoor grown bush would just dry out stiffly if it wasn't happy, not wilt and flop.