which plastics are safe to use as containers to grow food? - polyethylene terephthalate
If your space is limited or the growing season is short, you may consider growing food in small containers.
"Container Gardening" is a fairly common practice where plastic buckets are the preferred medium.
With new information about plastic safety, however, you may be worried that chemicals will penetrate into your food.
While it is best to plant food in the dirt and stay away from toxins, certain types of plastic may be safe for your garden.
HDPEHDPE represents high density polyethylene.
You can identify high density polyethylene by finding a triangle and number 2 at the bottom of the container.
High Density Polyethylene for milk jug, juice and water container and most five-
A gallon of food.
The "green guide" of National Geographic magazine claims that high-density polyethylene will not transmit known chemicals to your food.
"City organic gardener" Mike Lieberman planted a complete garden in a high density polyethylene plastic bucket.
LDPELDPE, or low
Density polyethylene, most used in extrusion bottles and garbage bags.
You can identify it by finding a triangle and number 4 at the bottom of the container.
Another "safer" Plastic is listed in National Geographic: it doesn't transfer known chemicals to your food.
However, due to its natural flexibility, it may degrade faster in your garden, leaving some plastic behind.
PPPP stands for polypropylene, a strong plastic that is mainly used for caps and covers.
You can identify polypropylene by the triangle and the number 5 at the bottom of the container, although many covers do not include this "resin number ".
PP has a high melting point and can be "hot-
Fill "or use with products that need to be incubated.
It also does not spread any known chemicals into food.
This makes it an ideal material for garden containers, although it is difficult to find large PP containers.
PETPET is a transparent, tough plastic that can form a barrier that does not penetrate.
It is mainly used in water, juice and water bottles and can be identified with triangles and numbers 1 at the bottom of the container.
Pet disposable use is considered safe, but it is not very safe as a reusable container because it is difficult to clean.
This makes it absorb "flavors and bacteria that you can't remove," according to National Geographic ".
While you may not want to drink with an old pet container, it may be safe for gardening.
PLAPLA is a new type of plastic made from renewable resources such as corn, potatoes and sugar cane.
National Geographic claims that this plastic can't be recycled, but will be compost in your backyard.
This is ideal for growing seedlings that will eventually break through the plastic barrier and take root in the garden.