Polypropylene (PP) and polyethylene (PE) are non-polar, low-surface-energy plastics that present adhesion challenges for traditional primers. A good primer for PP and PE flooring needs to enhance surface adhesion without compromising the material's integrity. Silane-based primers are particularly effective as they chemically react with the plastic surface to improve bonding properties. Additionally, some specialized primers are formulated to work with polyolefin surfaces; these typically involve a surface treatment that increases the surface energy of PE and PP, improving paint, coatings, or adhesives adhesion. Prior to application, it's crucial to thoroughly clean the surface from any contaminants. Testing the primer on a small area first to ensure compatibility and desired adhesion is also recommended.

Polypropylene plastic pots are considered good for plants due to several beneficial properties. They are lightweight, making them easy to move and handle. These pots are resistant to cracking and fading, ensuring durability and longevity, even when exposed to various environmental conditions. Moreover, polypropylene is non-toxic, ensuring it won't leach harmful chemicals into the soil, which could negatively affect plant health. However, it's important to note that these pots can restrict air flow to the roots and don’t break down naturally, which might not be ideal for all plant types or eco-conscious gardeners. They are a practical choice for many gardeners, offering a balance between functionality and environmental concerns, but it's crucial to consider the specific needs of the plants and personal sustainability values when choosing pots.