Jacob's herb is a very poisonous plant that has no place in any garden. Here are three ways you can fight the poisonous St. James' herb.Jacob's herb is very poisonous
The poisonous herb, which is also known as Jakobs-Greiskraut, is a very big problem for farmers and horse keepers, because it can cause great damage to cows and horses (e.g. liver poisoning). It is therefore very important that you control the herb intensively in order to protect your animals.
You can generally fight the ragwort in a biological, mechanical or chemical way. Depending on how widespread it has become, you should choose the ideal method of control and combat the poisonous plant.
Possibility 1 - biological control
The ragwort provides numerous insects with food, which is why you should try a biological control first.
The biological control should then be such that you try to attract insects such as beetles, moths or flies. However, this is a difficult and, above all, quite lengthy option.
However, mowing does not help at all, it can even do the opposite. Especially if you mow the St. Jacob's herb during flowering. Because this allows the seeds to spread even further.
Possibility 2 - mechanical control
Mechanical control of the St. James' herb would therefore be easier. With this variant, you have to prick out the plant and its roots with a digging fork or weed cutter and dispose of them in well-sealed household waste. You can also burn the herb directly. Please always wear gloves with this variant!
You should do this work after heavy rain, as this will make it easier to remove the St. James' herb.
Mechanical control is particularly effective when there are only a few poisonous plants in the garden.
It is best to prune the ragwort before flowering (around May) so that it cannot spread any further. After cutting out, you should then carry out several checks every 3 to 5 days!
Option 3 - chemical control
If neither the biological nor the mechanical control has the desired effect, you must consider chemical control with glyphosate.
Ideally, this type of control should be carried out in the spring when the plant is still in the development stage and therefore dies more quickly.
You should not use glyphosate in continuous rain, very low or extremely high temperatures - little effectiveness.
As soon as the poisonous plants have died, you must also remove them with gloves directly on site and then destroy them.
The use of herbicides is the responsibility of trained personnel only, e.g. Garden companies, farmers, etc. which is why you have to commission the chemical control of St. James' herb with herbicides! (Spray regulation)