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How To Control Hydrillahydrilla

There are some invasive weeds that start off small that can grow into large mats which overtake a pond or lake but there are others that are more subtle and homeowners with ponds or lakes don’t realize that a problem is afoot until it seemingly out of nowhere dominates the water. One such aquatic weed is known as Hydrilla. This plant is known as the “invisible menace” because most of the time they go undetected until they have filled the water.

Hydrilla is a perennial weed which forms dense colonies and can grow to the surface in water over 20 feet deep. Hydrilla branches at an alarming rate and after reaching the surface it extends across it forming thick mats.

Hydrilla can reproduce by fragmentation, from seeds, from turions (also known as axilary buds), and from tubers. Hydrilla leaves are blade shaped and range between 1/8 inch and 3/8 inch long with small tooth margins and spines on the underside of the midrib which make them feel rough. Leaves are usually 4 to 8 in a whorl.

Hydrilla outbreaks can deal a lot of damage to the economy. Millions of dollars are spent trying to control this aquatic pest which notoriously gets in the way of recreational activities and opportunities like boating, swimming, fishing, etc. If you are dealing with hydrilla on your property, Solutions Pest and Lawn can help you in the form of effective aquatic herbicides and helpful how-to advice.

How To Get Rid of Hydrilla: 3 Step Solution

When controlling aquatic weeds like hydrilla, there are several ways you can go about removal. Some take the manual route and physically remove the weeds. However if you have a particularly large hydrilla problem where they have heavily overtaken your pond or lake, physical control may be too labor intensive and time-consuming to carry out. At Solutions Pest and Lawn we have aquatic herbicides which you can use to kill off hydrilla and discourage growth. Below we have laid out a 3 step plan where if followed closely, you can easily eliminate hydrilla.

Step 1: We recommend starting with a careful inspection. Survey your lake or pond and determine what the best and safest plan of option there is to take. You have to take into account how the lake or pond is utilized not only by humans but also the fishes and aquatic life which inhabits the water. Asking yourself these questions and weighing the pros and cons of control before proceeding is a highly recommended first step.

Step 2: Once you have carefully analyzed your pond and lake, you can than move on to selecting a treatment method to manage the hydrilla growth. At Solutions Pest and Lawn we have a large selection of different aquatic herbicides which come in both liquid or granular forms. Liquid herbicides are a great solution because they attack weed growth in shallow water on or above the ponds surface and can be spread evenly with a pump sprayer. This makes the control process efficient and convenient to physical removal.

Granular herbicides are also an excellent selection especially when weeds are submerged as blankets under the water surface in deep areas of the pond or in ponds with flowing water. These heavier granules can be applied with a hand spreader and will sink directly onto the weed beds. What you select is entirely up to your personal preference. You will see our recommendations below.

Step 3: Apply the the selected herbicide to your pond or lake during ideal temperatures and following the instructions carefully on the product label of the herbicide you chose. Depending on the size of your pond or lake, you may need to conduct treatment in sections, waiting 2 weeks between treatments until you’ve treated the entire body of water. There is a more detailed guide on applying weeds in our Knowledge base.

Browse our hydrilla control products below. If you need any assistance with your order or any DIY advice, you can contact us directly via email, live chat or by phone and we will be happy to answer any questions you have.


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