With our short Calgary growing season, getting a jump on indoor seedlings is one of the best ways to ensure a productive community garden. Starting seeds inside gives tender and slow-growing plants the head start they need to mature before our early fall frosts return.
In Calgary, crops like tomatoes, peppers, onions, leeks, cabbage, broccoli, herbs, and many flowers do best when they’re started indoors six to ten weeks before the last frost. Since our final frost often arrives in late May or even early June, it’s important to plan ahead. Beginning seeds indoors in March and April allows plants to be strong and ready for transplanting once the soil has warmed.
You don’t need a fancy setup to get started. A bright windowsill or a simple grow light will do. Use a light seed-starting mix, sow seeds according to packet instructions, and keep the soil lightly moist. Consistent warmth helps germination, so placing trays in a warm area or using a heat mat for peppers and tomatoes can make a big difference. Once seedlings sprout, provide plenty of light and good airflow to keep them sturdy and healthy.
As we prepare for spring, the community garden committee has many exciting things coming your way this season. Whether you’re new to indoor seed starting or a seasoned grower, we’re here to support you.
Keep an eye for plot registrations on March 15, 2026, to secure your spot! Together, we can make this year’s community garden our most abundant yet.
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