I’ve had these agapanthus in my yard for 29 years and they’ve never dropped like this. It’s almost like a poison is spreading along my back fence. One by one these beauties have fallen over. I’ve no idea what to do.
Problems with agapanthus typically result from overwatering. Have you had a lot of rain this year? Also they should be divided about every three years. This should help:
https://www.gardeningknowhow.com/ornamental/bulbs/agapanthus/diseases-agapanthus-plants.htm
HOW TO CARE FOR LILY OF THE NILE
This article will help you.
https://www.gardeningknowhow.com/ornamental/bulbs/agapanthus/agapanthus-plant-care.htm
Agapanthus is in a plastic pot. It has 5 flower stalks but most of the leaves are yellowing.
It is likely very root bound and needs to be divided.
This article will help you.
https://www.gardeningknowhow.com/ornamental/bulbs/agapanthus/dividing-agapanthus-plants.htm
Agapanthus seeds need a dark blue color and white color.
We do not sell seeds or plants, but offer free gardening information.
An Internet search should net some reputable vendors.
I forgot to plant my agapanthus last October -- when can I do it ?
If the ground is workable, you can plant it now, otherwise, wait till weather warms up a bit.
https://www.gardeningknowhow.com/ornamental/bulbs/agapanthus/agapanthus-plant-care.htm
There has been a huge infestation of these worms in two agapanthus pots that I have. I was wondering if there was any spray or pesticide I can use to get rid of them. I’ve included a photo of a dead one.
Is it feeding on the leaves of your plants? If so, you might try Bt, which is an organic pest control. I've included an article with other options as well.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/using-bacillus-thuringiensis.htm
https://www.gardeningknowhow.com/special/organic/what-are-organic-pesticides.htm
Over the last few years, every so often I lose a large plant. Others continue to grow and live well. I have tried spraying for mites, but doesn’t seem to have altered anything.
The most common problem with the plant is overwatering. They need to dry out a bit between waterings, so providing extra water may be completely unnecessary.
With that being said- It appears to be a fungal/bacterial infection. Here are some articles that will help:
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
https://www.gardeningknowhow.com/garden-how-to/info/applying-bactericide-to-plants.htm
https://www.gardeningknowhow.com/ornamental/bulbs/agapanthus/diseases-agapanthus-plants.htm
https://www.gardeningknowhow.com/category/ornamental/bulbs/agapanthus