If your home's interior is feeling a bit drab and lifeless, adding a handful of houseplants to the mix can make a world of difference. This is especially true during the winter, when a little bit of greenery inside can help you forget about the weather outside.

How to freshen up houseplants in the shower

Do you have a layer of dust on your indoor plants from the pre-Obama era?

As the sun shines on my plants, I can see it's been too long. If I can write my name on the leaves in dust, I know it's time to send my greenery to the shower.

Light levels are so low in February in Calgary that any extra interference, like dust, slows houseplants down and blocks the already limited light. If leaf tips are browning or whole leaves yellowing, the plant is probably cutting its losses by getting rid of the lazy leaves that are too shaded to give back.

In nature, regular rains wash leaves clean, but in your apartment or house, plants need a helping hand.

Engineered gardening could help expand growing potential

You likely don't think about light quality or intensity when you're crunching a carrot or raising a radish, so why should you care about Jack Zhang's newly engineered lights?

Because Zhang's new LED lights could help you grow your own super-efficient vertical farm in a kitchen nook, empty bedroom or spare closet.

Zhang, an electric engineer by trade, spoke to me about his newly imagined LED lights when the Lumenari Biosciences co-founder and CEO attended the Canwest Horticulture show in September. At that time, Zhang said his company was, "all about designing energy-efficient lighting systems for the horticulture industry."