Sustainable Urban Organic Gardening

[this is another Coursera course assignment]

Global warming is happening. As urban dwellers, what can we do to help fight against climate change? One of the many things that we can do to help is green our cities by growing our own organic gardens and organic food - sustainable organic gardening.

Common Mistakes Urban Gardeners Make

I compiled the following list for a Coursera course assignment:

Planning. Don’t hurry your garden projects, do your homework first, so that you know your taste and your sites. If you are a new homeowner, you may want to wait for one year to know your yards better - existing plants, pests, and light, etc. - and start from small gardening projects. Planning includes budget, timing, site selection, garden design and more.

De-weeding is a four-season job

I live in Toronto, Canada, and yes, de-weeding is a four-season job for me and it's fun! Just imagine the fresh air, singing birds, beautiful flowers, organic tomatoes and many more!

I don't have any favourite sports, so walking is usually my only exercise. I do enjoy walking around my yards and the neighbourhoods where I live and where I work.

My favourite de-weeding tool is a weeding knife. I use it to loose soil around the roots and then pull the weeds out. I always wear a pair of gardening gloves when I de-weed.

Coursera is green

Coursera offers many free online courses related to climate change, energy, food, agriculture, animals and plants etc. taught by world-class professors and fabulous professionals.

Grow organic container veggies

Fall is a good time to buy discounted garden containers. There are a few good reasons why do you want to use containers even if you have enough garden space in your backyard:
  • Containers are easier to tend
    You can raise your containers for easier handling and move containers for sunshine, shade, airflow and space.

Grow your own organic veggies

The taste of fresh-picked home-grown organic vegetables is even better than that of what you can buy. Not to mention the satisfaction of "working" outside, enjoying fresh air, bright sunshine and a great sense of achievement. Planned correctly, the most basic vegetable gardens take little time or effort.

Water conservation tips

Water is the most important resource on Earth. Without water we could not live. According to, 884 million people lack access to safe water supplies; approximately one in eight people.
  • Reduce running water use :
    Don’t run the tap for cold water – use ice cubes or keep a jug of water in the refrigerator. Never leave the tap running when washing vegetables or dishes, shaving, or brushing your teeth.


General-purpose computation on graphics processing units (GPGPU) is the technique of using GPUs, which typically handle computation for computer graphics, to perform data-parallel computation in applications traditionally handled by CPUs.

Green gardening tips

Here are a few environmental gardening tips I use to green my own garden.
  • Make your own green pesticide
    1) Combine one teaspoon dishwashing liquid and one cup vegetable oil and shake vigorously to let mix well. 2) At ten-day intervals or more often if needed, combine eight teaspoons of the mixture and one quart water and spray.

Indoor air purifier plants

rubber plantTrees, shrubs, herbs, flowers, grasses and other plants are nature's air purifiers. They constantly clean the air and reduce the air pollution. Plants in your home or office are not only decorative, but also air purifiers. Here is a list of popular and highly effective indoor plants that homeowners and office dwellers can have as living air purifiers:

Plant Name Ability to remove chemicals (out of 10) Lighting conditions Notes
Areca Palm
(Chrysalidocarpus lutescens)
8part sunEasy to grow. Requires high humidity.
Bamboo Palm
(Chamaedorea seifrizii)
9part sunEasy to grow.
Boston Fern
(Nephrolepis exaltata Bostoniensis)
9part sunRequires humidity and good light.
Corn Plant
(Dracaena fragrans Massangeana)
8indirect sunVery easy to grow.
Dracaena Janet Craig
(Dracaena deremensis Janet Craig)
8part sunEasy to grow.
Dwarf Date Palm
(Phoenix roebelenii)
9indirect sunEasy to grow.
English Ivy
(Hedera Helix)
9indirect sunRequires high humidity. Parts poisonous. Prone to spider mite.
Ficus Alii
(Ficus macleilandii Alii)
7full sunEasy to grow.
Heart-leaf Philodendron
(Philodendron scandens ssp. oxycardium)
8indirect sunEasy to grow.
Kimberley Queen
(Nephrolepis obliterata)
9indirect sunEasy to grow.
Lady Palm
(Rhapis excelsa)
7part sunEasy to grow.
Peace Lily
(Spathiphyllum wallisii)
8indirect sunEasy to grow.
Rubber Plant
(Ficus robusta)
9indirect sunEasy to grow.
(Brassaia actinophylla)
8indirect sunEasy to grow.
Weeping Fig
(Ficus benjamina)
8full sunRequires draught-free environment.
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