Is it safe to plant a garden near a septic tank?

Author: Dawn McKenzie  |  Last update: Thursday, February 5, 2026

The most important reason you should not install a vegetable garden on top of, or right next to, a septic system disposal field is because the plants can become contaminated by wastewater that has not yet been renovated by the field. Plants on disposal fields can absorb wastewater pathogens.

How far should a garden be from a septic tank?

Build the veggie garden 10 feet away

If you plant them in the septic system area, you are exposed to foot traffic, digging, and a surplus of water that can affect its function. Even more importantly, growing vegetables on a drain field is simply unsanitary.

Can I plant vegetables near a septic tank?

Planting gardens over, near and around septics is okay as long as the roots are shallow and are of plants that do not like water, except vegetable gardens. We do not recommend planting vegetable gardens over septic sytems and thier drain fields. Planting away from, and next to is okay.

What plants are best near a septic system?

Here are some options to consider: Herbaceous plants, such as annuals, perennials, bulbs and ornamental grasses are generally the best choices for use on a septic drain field. Ornamental grasses also offer the advantages of having a fibrous root system that holds soil in place and providing year-round cover.

How to landscape around septic tanks?

Perennials and grasses (including ornamental grasses) work best around your septic tank and drain field. Their shallow root systems are less likely to invade the underground system and cause it damage. For the same reason, small, non-woody ground covers are a good choice.

Can I Grow Vegetables over my Septic System & more Gardening Questions Answered

Can I plant flowers over a septic field?

You can plant grasses and other shallow-rooted flowers and plants directly on top of a septic field. Keep trees away from a septic tank and field. The tree's height in feet indicates how far the tree should be from the system.

How far away from septic to plant trees?

So if you expect your tree to grow to 50 feet, plant it at least 50 feet away from all parts of your septic system, including the drainfield.

Can you put raised garden beds over a septic field?

Unfortunately, placing raised beds over the drainage area isn't a good solution either. The added soil depth of the beds may inhibit evaporation and limit the effectiveness of the septic system.

How often should a septic tank be pumped?

Household septic tanks are typically pumped every three to five years. Alternative systems with electrical float switches, pumps, or mechanical components should be inspected more often, generally once a year.

Can you plant fruit trees near a septic tank?

Fruit Trees, Japanese Maples and Oak Trees

This is going to damage your home's water flow, and the entire septic system. However, if you are careful, you can put trees with non-invasive, shallow roots in the area around your drain field and septic tank. Some examples include crabapples and white oaks.

Can you put mulch over a septic field?

Even mulch or bark over the drainfield is not recommended, because it reduces air exchange and retains water.

How deep is a septic tank?

The septic tank is often buried about six feet deep and ten feet away from the building. A septic tank has two chambers. The solids are collected in the first chamber which settles to the bottom of the tank, while the fats and oils float to the top.

Can you flush food into septic tank?

Food Waste

Sending food items down your drains is never a good idea. If your home relies on a septic tank, even using a garbage disposal can end up causing problems for your system. While any food waste is risky, the following items are particularly hazardous: Coffee grounds.

Can you plant a vegetable garden near a septic tank?

Don't: Plant a vegetable garden on or near the drainfield. Put plastic sheets, bark, gravel or other fill over the drainfield. Reshape or fill the ground surface over the drainfield and reserve area.

How far should septic be from house?

Typically, septic tanks are installed below ground level within 10-25 feet from the house, but they must be a certain distance away from any creeks, rivers, ponds, wells, paved surfaces, trees, and structures such as homes, patios, and decks.

What can you put over a septic tank?

Grass or herbaceous vegetation that can be disturbed should be planted over the tank, so you won't hesitate to damage them. The roots of grass and other herbaceous plants can help remove excess moisture and nutrients and help the septic system work efficiently.

Can a septic tank go 20 years without being pumped?

In general, a septic tank should be inspected every 1 to 3 years and pumped every 3 to 5 years.

What brand of toilet paper is septic safe?

Cottonelle UltraComfortcare is clog-free, septic-safe, and sewer-safe. Cottonelle uses renewable plant-based fibers, which makes this toilet paper biodegradable and great for your septic system. They do not contain any harsh ingredients or chemicals, so should not disrupt the delicate balance in your septic system.

What not to use when you have a septic tank?

The only things that should be flushed down the toilet are wastewater and toilet paper. Do not put cigarette butts, paper towels, sanitary tampons, condoms, disposable diapers, anything plastic or similar non-biodegradables into a septic tank system.

How to landscape over a septic tank?

The Dos and Don'ts of Landscaping Around Your Septic Tank
  1. Do use faux rocks.
  2. Don't use heavy objects.
  3. Do plant ornamental grasses.
  4. Don't plant large shrubs or trees.
  5. Do put a planter over the lid.
  6. Don't bury the septic tank lid.
  7. Do use an ornamental vent cover.
  8. Don't block your septic system vent.

Can you plant flowers on a septic mound?

Perennial flowers, such as daylilies and peonies, can be grown; however, extra care must be taken to mulch or plant close together so soil will not be exposed and erode. Low maintenance plants that do not need tending and care (remember minimal traffic on the mound) are best.

Can you put a fence over a septic field?

In general: Your septic tank and leach field should be 100% within your property line, so putting a fence on the outside edge of your property won't be a problem as you won't hit either the leach field or the septic tank. If you want to run a fence through the leach field, beware!

How far is it from a septic tank to a garden?

While there is no hard and fast rule, and it will depend on many factors, it is a best practice to have any produce or fruit trees at least 10 feet from the perimeter of the leach field to avoid having the vegetables interact with incompletely cleaned water.

How do you keep tree roots out of septic drain field?

Physical root barriers can be installed that prevent roots from reaching septic equipment. Of course, physical root barriers need to put in place before roots reach a drain field and cannot remedy a problem with tree roots that are already growing in the septic system's space.

What tree has the least invasive roots?

4 Types of Trees with Non-Invasive Roots that are Best for Your Yard
  • Japanese Maple.
  • Crape Myrtle.
  • Eastern Redbud.
  • Cornus Mas.
  • Serviceberry.
  • Kousa Dogwood.
  • Japanese Tree Lilac.
  • Dwarf Korean Lilac.

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