The most important piece of information you need before you start planning your garden is your "Growing Zone". In Canada we use "Plant Hardiness Zones" which was last updated in 2005 with an expected update in 2024. The USA uses the "USDA system" which was updated in 2023. The Canadian Government has done a fantastic job at providing resources online to help Canadians determine their local climate zone, see attached graphs below. This means where I live, Kitchener-Waterloo, is in climate zone 5. Our average last frost is May 11th and our average first frost is October 1st. Giving me approximately 143 days in a growing season. We have also been seeing warmer than usual temperatures lasting longer into the fall, so an updated map is much awaited by Canadian gardeners. If you want to get a jump start on the season, plug the last frost information for your zone into this calculator from Johnny's Seeds to get a suggested timeline for seed starting.
Growing seeds indoors doesn't require a lot of money or fancy equipment, but premade grow table kits can be quite expensive. I've saved over $500 by creating a DIY version that works just as well for a fraction of the cost. Top: Lee Valley Grow Table Bottom: My DIY Version My first few seasons of starting seed indoors I used my Grandfather's "Professional" Light Table - it was a gift from his children one year and cost well over $1,000 at the time. It had three tiers of shelving with adjustable fluorescent tube fixtures that got quite warm. The plastic shelves were removable for easier cleaning. It worked really well and the plants benefitted from the adjustable lights. My Grandpa's Grow Table - 3 Tiers, 4 Ft Long, Approx $1000 value. When I decided to expand, I looked at purchasing a similar light table - the cheapest option for a similar size (4 feet long, three tiers) was well over $700. I figured I could DIY for cheaper, leading me to buy a metal 5-tier ...