Hi, I'm Alan from Newlands Nursery.
The most common issue we ever get with a plant is over-watering. Our nursery is now 70 years old, still, it is only members of the family who do the watering because actually, believe it or not, you get that right, you've cracked 99% of all the problems you get with plants. And over-watering, we all think we're being super nice, and that actually can cause more problems than under-watering. Of course, all plants are different, in the video below I discuss what you can do in general and use a reference achillea plant. Please watch for a step by step!
If you've got any questions, we understand it varies from one plant to the next, just ask your questions, get in touch in a way that suits you, and we'll be sure to get back to you. See you soon!