You had lavender and thyme plants in pots that dried out, turning dark brown. You cut back the thyme stems, leaving only the roots, but see no regrowth even after transplanting. The lavender was transplanted without pruning the dead stems and is now completely brown. You're wondering if either plant can recover and what steps to take.
The problem likely stems from improper watering—either too little or too much—or a disease. While underwatering obviously causes plants to dry out, overwatering is equally harmful. Excess water saturates the roots, preventing them from absorbing oxygen and nutrients. Eventually the roots die, and the plant cannot be saved.
Since you've seen no regrowth after transplanting, the plants may be too far gone. My recommendation is to take them to a local garden center for a hands-on inspection. Staff there can assess the root systems and overall condition immediately, offering specific advice based on what they see. Without examining the plants directly, I can only go by your description, which suggests they may not survive.
If the garden center confirms the plants are dead, you'll need to replace them. When you do, ensure proper drainage in pots, water consistently but avoid soggy soil, and provide full sun—both lavender and thyme thrive in those conditions.
Good luck, and feel free to reach out if you need further guidance.
— Mike
Saving 'Jelly Bean' and Hens & Chicks from Georgia Rains
When to Move Sarracenia Outdoors in Spring: Zone 5A Timing
Why Won't My Venus Flytrap Close? The Critical Role of Light
Rescuing Sarracenia from Fungal Rot: Radical Rhizome Surgery and Rehabilitation
Reviving an Aging Drosera capensis: Cut Back & Propagate
Carnivorous Plants for Mosquito Control in Hot Climates: Reality Check
Choosing Sarracenia for Northeast Iowa and Finding Wild Populations
Rescuing a Nepenthes from Full Sun: Proper Light and Acclimation
Syngonium Podophyllum Care: Light, Water, and Pruning
Fertilizer Myths: Aquarium Products and Hydrogen Peroxide Don't Help Houseplants
Ponytail Palm in Pots Without Drainage: Crown Rot from Overwatering
Guzmania Bromeliad Care: Don't Repot, Water Soil Not Cup
Copyright © www.100flowers.win Botanic Garden All Rights Reserved