Plants Love Rain—It's Just Natural! 1. Rainwater is 100% soft water. Free of the salts, minerals, treatment chemicals, and pharmaceuticals that are found in municipal water, groundwater, and surface water, rainwater is pure hydration.

Is rainwater better for plants?

Rainwater will also clear out the stomata or respiratory pores on your plant's leaves, improving its ability to take in carbon dioxide and nutrients for photosynthesis. It will be healthier and grow better. This is true for your outdoor garden as well.

Can I give my plants rain water?

Rainwater is perfect for watering your plants, flowers and grass. You can also use it to wash your car. Rainwater is relatively pure stuff. ... Actually, the absence of those very chemicals that make tap water safe for drinking makes rainwater a better choice for your outdoor watering needs.