Back years ago my mom planted some black eyed susans in our garden, and she always told me growing up to not pick them or step on them, but now shes begging me to kill them… and there’s a lot. At the beginning of the summer I sprayed them with raid, and that accomplished nothing. Then, after that I went all out on a huge patch of them with a machete… Well, they have sense risen from the dead and multiplied even more. I feel like im slowly being sufficated by yellow flowers, and nothing else can grow in our gardens. WHAT AM I SUPPOSED TO DO? HELP!!!
Thank you!
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First, Raid is an insecticide, not an herbicide. It kills insects, not plants. Second, black-eyed Susans are perennial. The roots survive the winter, and survived your machete attack too. You can dig up the plants and shake the soil from the roots before you discard them. Or, you can spray them with a glyphosate-based herbicide, such as Roundup. The herbicide will kill living plants, including the roots, but you must avoid getting the herbicide on any plant you wish to keep. You might need to dig up any black-eyed Susans close to desirable plants, and spray only large clusters that are away from plants you wish to keep.
Seed that has fallen since the plants have been in this location will continue to germinate, so you will need to pull out new plants for possibly several years. Each year there will be fewer plants to remove. You might be able to apply a pre-emergent, broad-leaf weed killer (prevents seed from germinating) to this area. Though intended for crab grass these will also prevent any seed you plant here from germinating that year.
The least dangerous method is digging up each plant and weeding out seedlings that emerge in following years.
Source(s): http://en.wikipedia.org/wiki/Glyphosate
http://www.domyownpestcontrol.com/pre-emergent-her…
The seeds are as tiny as grains of ground black pepper. They are in the dirt and cutting the flowers off won’t eradicate them. You will have to dig them out then treat the dirt with an herbicide. Nothing will grow there for at least a year(I would give it two just to make sure). Don’t be surprized if the Susies come up somewhere else in your yard. Clumps of seeds travel on the wind, fall somewhere, then germinate.
Raid is an insecticide (kills) not an herbicide (kills plants) Chopping off the tops only encourages new growth. If you want to get rid of all of them you can use an herbicide like Roundup keeping in mind that if there are desirable plants near by they will most likely be damaged or killed by chemical drift. You can also dig them up making sure to get all of the roots. You will still have some pop up from seed. Manage new growth as soon as it appears.
LOL
Get a shovel an dig them out. Put them in a recycle bag for the trash man to pick up. When you get them out, spray with Round Up. Nothing will grow in there for a full year.
I got married at the end of July (northeast USA) just in time for the black eyed susans to be in bloom. They opened up maybe days before the wedding and looked beautiful in the pictures. Maybe that is something to consider – having them in nature in the background and carrying something more durable.
Don’t use chemicals, that just poisons the soil for other plants and you. Get a shovel and dig out the one you don’t want. It’s not hard to do, they don’t have deep roots.
confusing issue. research over yahoo or google. just that could help!