What to plant this week in Regina, SK
With average last frost landing around May 15, Regina gardeners are in the final stretch of spring hardening, as late-season crops like Swiss Chard and Collard Greens begin their harvest window. The lingering chill of Zone 3b demands that you protect tender starts like Cherry Tomatoes from unexpected snap freezes before the first true heat arrives.
The next 7 days
Regina, SKGrowing in Regina right now
- The clay-heavy soil common in Regina expands and contracts with freeze-thaw cycles, so water deeply now to encourage roots before the ground locks up for winter.
- Short daylight hours mean cool-season crops like Kale and Lettuce are still productive, but avoid planting warm-weather annuals until mid-June at the earliest.
- Wind speeds often exceed 40 km/h in late spring; secure all transplants with sturdy stakes immediately to prevent stem snap from gusty storms.
- Soil temperatures remain cool despite air warming, making it critical to wait for 'transplant now' dates rather than rushing delicate seedlings outdoors.
Sow this week
No direct sowing windows open this week.
Transplant this week
Nothing is due to go out this week.
Harvest soon
38 crops- Bachelor's Button (Cornflower)
- Beet
- Borage
- Bush Bean
- Cabbage
- Calendula
- Carrot
- Cauliflower
- Cherry Tomato
- Chervil
- Cleome (Spider Flower)
- Collard Greens
- Cosmos
- Dill
- Fava (Broad) Bean
- French Marigold
- Garlic
- German Chamomile
- Kale
- Lettuce
- Napa Cabbage
- Onion
- Pansy
- Parsley
- Pole Bean
- Potato
- Scallion (Bunching Onion)
- Scarlet Runner Bean
- Shallot
- Snapdragon
- Sweet Alyssum
- Swiss Chard
- Tomato
- Turnip
- Vinca (Madagascar Periwinkle)
- Yellow Summer Squash
- Zinnia
- Zucchini
Seasonal tips
- Continue succession sowing bush beans and pole beans every two weeks to extend your harvest through summer.
- Mulch around young tomatoes and peppers to retain moisture as soil temperatures stabilize after the frost-free date.
- Pinch back the tops of Swiss chard and kale to encourage bushier growth before autumn frosts arrive.
Pest & disease watch
- Cutworms are actively targeting young Bean and Squash stems in the current moisture, requiring immediate collar protection or hand-picking at dawn.
- Early spring aphids frequently colonize the undersides of Cabbage and Kale leaves before natural predators can establish a population.
- Slugs thrive on the damp clay soil edges, feeding heavily on Pansy and Sweet Alyssum foliage during cool, wet nights.
Watering this week
Provide deep watering two to three times per week, ensuring consistent moisture for seedlings like dill and chervil.
Harvest zucchini and yellow summer squash when they are small to prevent the plant from going into a dormant phase.
Regina gardening questions
3Can I plant my Cherry Tomato seedlings outside now that the forecast is above freezing?
No, despite the rising thermometer, Regina's Zone 3b climate requires waiting until the soil fully warms in mid-May to avoid cold shock and root rot. Wait for the official 'transplant now' window to ensure survival against our typical late spring snaps.
My Swiss Chard and Lettuce are getting bolted early; is this normal for Regina?
Yes, rapid bolting in cool-season crops often happens when day length suddenly extends or temperatures fluctuate wildly between nights. Harvest the heads immediately for cooking rather than waiting for seed formation to extend your greens supply.
What specific pest should I watch for on my Potato and Fava Bean plants right now?
Keep a close eye on flea beetles, which create tiny shot-hole damage on the leaves of both Potatoes and Beans during this damp spring period. A strong water spray in the morning is often enough to dislodge them before they cause significant defoliation.
Other cities in zone 3b
4See the full zone 3b guide → · Plan your Regina garden in SproutGuide →