How Long After Glyphosate Can I Seed (And Why)?

Exact Answer: After 3 days

Glyphosate is used to kill both unwanted plants and leaves by spraying it on the leaves. It contains a form of sodium which also helps to ripen certain crops. It is much popular among farmers to control the increasing weeds. It is better to use Glyphosate as per the directions to avoid any type of threats related to a human being.

Glyphosate can be in the form of either liquid of amber-color or salts. Never try to touch the plants with bare hands immediately after spraying Glyphosate. It also helps to control few aquatic plants. It is banned in few states as it may lead to cancer in humans and also the death of few insects like bees.

How Long After Glyphosate Can I Seed

How Long After Glyphosate Can I Seed?

Glyphosate, a well-known herbicide works by preventing plants to grow by blocking particular enzymes. Plant tissues absorb the glyphosate quickly and spread across the system, which helps to stop the growth of unwanted plants. This herbicide should be allowed to penetrate as it requires time to affect the roots of the weeds. Glyphosate is one of the products included in Roundup; it is worth waiting at least for few days before seeding, depending on the amount and type of chemicals used.

It may even take months to seed if the combination of chemicals used is severe than expected. But usually, it is recommended to limit the use of glyphosate and plant the seeds within a week for good results. When the Glyphosate is sprayed, the chemicals reach the roots of the plants from the leaves which vanish the plants. But, glyphosate does not leave any residue. The chemical present in the glyphosate affects the grass and weeds but does not produce any other major side effects.

If you want to sow the seeds of an ornamental flower, you may prefer to seed the very next day whereas, in the case of vegetable seeds, it is worthy to wait for three days.  It takes nearly a week to destroy the weeds. Though the glyphosate does not affect much, you may sow the seed even after few hours. But for maximum control of weeds and to avoid any side effects, waiting for 7 days is recommended.  Even to plant the grass on the lawn, three days delay is worth it.

SeedsTime to sow the seed after spraying Glyphosate
Grass3 days
Flowers24 hours
Vegetable3 to 7 days

Why Does It Take That Long To Seed After Glyphosate?

Glyphosate, the most commonly used weed killer is the best way to avoid unwanted plants, but as it contains chemicals it is better to follow the use care instructions. Most people have started to use natural weed removal but it is better to spray Glyphosate in the case of invasive plants. Roundup is an effective and popular herbicide that contains Glyphosate.

Guidelines should be followed very carefully in the case of spraying Glyphosate, particularly for lawns as it may affect the growth of a new plant. There must be enough amount of gap between spraying glyphosate and sowing the seeds. Leaves absorb the glyphosate, (contact weed killer) completely, and penetrate the root. When you dig or plow to seed, the weeds are disturbed which may lead to the breaking of roots resulting in sprouting again. It may harm the newly sowed seeds as they are vulnerable. So, enough amount of time should be provided before sowing other seeds.

Even after spraying herbicide, make a practice of pulling out the roots by wearing gloves to prevent the growth of weeds.  It would be easier to pull out the roots of the weaker system weeds. It is also worth working in wet soil as roots can be pulled out efficiently. It is advised by experts to use glyphosate (herbicide) during sunny as moisture always reduces the strength of glyphosate. At least try to prevent it from being moisture for 30 minutes, as it will not get washed away after a certain amount of time.


There are different types of products in the market to kill the weeds, as per the report of NPIC specialists. Few products can be used in vegetable plots whereas few are very harmful. Users should take care of the product before making use of it and the label should be read carefully for maximum use.

Before spraying glyphosate, wear shoes, gloves, and a mask to avoid the life-threatening risks.  Always keep the products away from children and pets until the product is dry and make us if weed control only in high temperatures (60 degrees Fahrenheit).


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