What do I do with my dead lavender plant?

Slightly filtered light is better and they like water but not over-watering

Your soil could have been contaminated and thus, the weed. To grow indoor you need plenty of light and warm temperature, watering when the plant is significantly dry and never fertilizing. Maybe this article will help:

https://www.hgtv.com/outdoors/flowers-and-plants/herbs/growing-lavender-indoors

Go back and complain. When the worst they can do is say no then go for it. They might replace it.

First, where do you live? What zone are you in? Find out here:

https://planthardiness.ars.usda.gov/PHZMWeb/

Next, did you repot it when you brought it home? If you didn't, that is partly why it may have perished.

See if these help.

https://www.americanmeadows.com/perennials/lavender/how-to-grow-lavender

https://everything-lavender.com/

https://www.countryliving.com/gardening/g2525/lavender-facts/

https://www.hgtv.com/outdoors/flowers-and-plants/herbs/10-tips-for-growing-lavender

I am in zone 9 where it gets really hot and very very dry during in the summer. I mean REALLY dry, less than 10% humidity. They will do well in pots but only with early morning sun and late late afternoon, early evening sun. In ground they can take the heat if watered well.

Chances are the other thing that sprouted is a weed. If you still have the receipt, take back to where you bought it and see if they will replace. A reputable retailer will be happy to replace and provide tips for success.

I use lavender for fresh bouquets, in cooking, makes wonderful cookies and tea as well as wonderful sachets for your cupboards and drawers.

Are you sure the sun is what killed the plant? Lavender plants need good drainage and air circulation. You should put mulch or pebbles at the bottom of the planter to assure good drainage.

If you plan on getting another, get rid of weed? Is it in container??Keep lavender in sun light(depending where you live(AZ?) may need dappled sunlight) & which kind/variety you have gotten) they need good drainage, kept dry,then watered well, they do not tolerate being transplanted or being moved. Did the leaves turn black?? probably not burnt but over watered. Once established Lavender is pretty much drought tolerant.

I'd check your zone also. I'm zone 7 which is kind of a moderate zone but even so, full sun here--particularly in the summer-- is quite different from full sun farther north. So far as the weed goes, it could have "planted itself" while in your yard. I find volunteers all the time in outdoor planters. Regardless, I really doubt the weed had anything to do with the demise of the lavender. Last, was the plant intended to be left potted in the original pot? I've rarely seen drainage material included in purchased potted plants at garden centers as an awful lot of potted plants are sold for potting into the ground. I agree lavender can be tricky to transplant so maybe it was sold as an intended potted plant.

Hello there,

Maybe it was pot bound and needed more soil to grow into!