Saskatchewan’s short growing season and cold nights demand annuals that grow quickly and bloom fast. If you’re looking for the easiest annual flowers to grow in saskatchewan, you need varieties that thrive in our unique climate. These flowers laugh at late frosts, love the intense summer sun, and deliver color from June right through September.
Forget finicky plants that need constant babying. We’re talking about flowers that practically grow themselves. Whether you’re a first-time gardener or just want a low-maintenance yard, these picks will make you look like a pro.
Why These Annuals Work In Saskatchewan
Our growing zone ranges from 2a to 3b. That means cold soil, short summers, and sudden temperature swings. The flowers on this list handle all of that.
They germinate fast, bloom early, and keep going until the first hard frost. Many are drought-tolerant once established, which is huge for our dry summers. Plus, they don’t need expensive soil amendments or complicated care routines.
You can direct-sow most of these seeds after the last frost, usually around late May or early June. No need for indoor seed starting unless you want earlier blooms.
Easiest Annual Flowers To Grow In Saskatchewan
Here are the top performers that consistently deliver in Saskatchewan gardens. These are the ones experienced local gardeners always recommend.
Marigolds
Marigolds are the undisputed champions of easy annuals. They germinate in just 5-7 days in warm soil. You can sow them directly in the garden after the frost danger passes.
- Bloom time: 8-10 weeks from seed
- Height: 6-36 inches depending on variety
- Sun: Full sun
- Soil: Any well-drained soil
French marigolds stay compact and bushy, perfect for borders. African marigolds get tall and make excellent cut flowers. Both types repel pests naturally, so plant them near your vegetables.
Deadheading isn’t strictly necessary, but it keeps them blooming longer. Just pinch off spent flowers every couple weeks.
Nasturtiums
Nasturtiums are almost too easy. They grow in poor soil, need little water, and bloom like crazy. The seeds are large and easy to handle, perfect for kids or beginner gardeners.
- Bloom time: 6-8 weeks from seed
- Height: 12-18 inches for bush types, trailing varieties can spread 3 feet
- Sun: Full sun to partial shade
- Soil: Poor to average soil
You can eat the flowers and leaves. They have a peppery taste that’s great in salads. Plant them in hanging baskets, window boxes, or directly in the ground.
One tip: don’t fertilize nasturtiums. Rich soil makes them grow lots of leaves but few flowers. Neglect them and they’ll bloom their heads off.
Sunflowers
Nothing says summer like sunflowers. They grow fast, handle our wind, and attract bees and birds. Dwarf varieties work well in small spaces, while giant types can reach 12 feet.
- Bloom time: 55-70 days from seed
- Height: 1-12 feet depending on variety
- Sun: Full sun
- Soil: Any soil, even clay
Direct sow after the last frost. Plant seeds 1 inch deep and 6 inches apart. Thin to 12-18 inches once seedlings appear. Water deeply but infrequently once established.
For continuous blooms, plant a new batch every 2-3 weeks until mid-July. Choose branching varieties like ‘Autumn Beauty’ for more flowers per plant.
Zinnias
Zinnias are the workhorses of the summer garden. They bloom non-stop from July until frost. The more you cut them, the more they bloom.
- Bloom time: 60-70 days from seed
- Height: 6-40 inches depending on variety
- Sun: Full sun
- Soil: Well-drained soil
Direct sow after soil warms up. Zinnias hate cold feet. Wait until nighttime temperatures stay above 10°C. They’re susceptible to powdery mildew, so water at the base and give them good air circulation.
Dwarf varieties like ‘Thumbelina’ are great for containers. Tall types like ‘Benary’s Giant’ are perfect for cutting gardens.
Calendula
Calendula, also called pot marigold, is one of the first annuals to bloom. It handles cool spring weather better than most. The flowers are edible and have medicinal properties.
- Bloom time: 6-8 weeks from seed
- Height: 12-24 inches
- Sun: Full sun to partial shade
- Soil: Average soil
Sow seeds directly in early May, even if there’s still frost risk. Calendula shrugs off light frosts. Deadhead regularly to keep flowers coming. The petals can be used in salves, teas, and salads.
Self-seeds readily, so you might get volunteers next year. Let some flowers go to seed if you want free plants.
Cosmos
Cosmos are the definition of low-maintenance. They thrive in poor soil and bloom until frost. The delicate foliage and daisy-like flowers add a soft, airy feel to any garden.
- Bloom time: 70-90 days from seed
- Height: 2-6 feet
- Sun: Full sun
- Soil: Poor to average soil
Direct sow after frost. Don’t fertilize cosmos. Too much nitrogen produces giant plants with few flowers. They actually bloom better when stressed. Pinch back young plants to encourage bushiness.
Tall varieties may need staking in windy areas. ‘Sensation’ and ‘Sonata’ are reliable choices for Saskatchewan gardens.
Petunias
Petunias are classic bedding plants that perform well in our climate. They come in every color imaginable and bloom continuously from planting to frost.
- Bloom time: Continuous from transplant
- Height: 6-18 inches, trailing types spread 2-3 feet
- Sun: Full sun to partial shade
- Soil: Well-drained soil
Petunias are usually bought as transplants since they need a long growing season. Look for ‘wave’ or ‘supertunia’ varieties that don’t need deadheading. They’re more heat and drought tolerant than standard petunias.
Water regularly, especially in containers. Fertilize every 2 weeks with a balanced liquid fertilizer for maximum blooms.
Snapdragons
Snapdragons add vertical interest and come in a rainbow of colors. They tolerate cool weather better than most annuals, making them perfect for Saskatchewan’s variable spring.
- Bloom time: 8-10 weeks from seed
- Height: 6-36 inches depending on variety
- Sun: Full sun to partial shade
- Soil: Rich, well-drained soil
Start seeds indoors 6-8 weeks before last frost, or buy transplants. Pinch the top when plants are 4 inches tall to encourage branching. Deadhead regularly for continuous blooms.
Tall varieties need staking. Dwarf types like ‘Floral Showers’ work well in containers and borders.
How To Plant And Care For These Annuals
Success with annuals comes down to a few simple steps. Follow these and you’ll have a stunning garden with minimal effort.
Preparing Your Soil
Most annuals aren’t picky about soil, but good drainage is essential. If your soil is heavy clay, mix in some compost or peat moss. Raised beds are ideal for Saskatchewan gardens.
Test your soil pH if you can. Most annuals prefer slightly acidic to neutral soil, around 6.0-7.0. Add lime if your soil is too acidic, or sulfur if it’s too alkaline.
When To Plant
Wait until after the last frost date, usually around May 24 for most of Saskatchewan. Check your local frost dates because they vary widely across the province.
For direct-sown seeds, wait until soil temperature reaches at least 15°C. Use a soil thermometer to be sure. Cold soil causes seeds to rot instead of germinate.
Watering Tips
Water deeply but infrequently. Most annuals need about 1 inch of water per week. Water at the base to prevent foliar diseases. Morning watering is best.
In containers, you’ll need to water more often, sometimes daily during heat waves. Stick your finger in the soil. If it’s dry an inch down, it’s time to water.
Fertilizing
Annuals are heavy feeders because they bloom all season. Use a balanced fertilizer like 10-10-10 every 4-6 weeks. Slow-release fertilizers work great for low-maintenance gardening.
Don’t over-fertilize. Too much nitrogen produces lush leaves but few flowers. Follow package directions exactly.
Dealing With Pests And Problems
Saskatchewan gardens have fewer pest problems than warmer regions. Aphids and slugs are the most common issues. Spray aphids off with a strong stream of water. Use beer traps or diatomaceous earth for slugs.
Powdery mildew can affect zinnias and other plants in humid conditions. Space plants for good air circulation and water at the base. Neem oil works as a preventive treatment.
Container Gardening With These Annuals
If you don’t have garden space, these annuals grow beautifully in containers. Use pots at least 12 inches wide for most flowers. Ensure drainage holes are present.
Use a quality potting mix, not garden soil. Potting soil is lighter and drains better. Add slow-release fertilizer at planting time.
For a stunning container, use the thriller, filler, spiller method:
- Thriller: Tall plant like snapdragon or tall zinnia
- Filler: Medium plant like marigold or petunia
- Spiller: Trailing plant like nasturtium or trailing petunia
Water containers daily during hot weather. They dry out much faster than garden beds. Fertilize every 2 weeks with liquid fertilizer since nutrients leach out with frequent watering.
Extending The Bloom Season
With proper planning, you can have flowers from May until October. Start with cold-tolerant annuals like calendula and snapdragons. Follow with heat-lovers like zinnias and cosmos.
Plant in succession. Sow a few seeds every 2-3 weeks for continuous blooms. This works especially well with sunflowers and zinnias.
Deadhead regularly. Removing spent flowers tells the plant to produce more blooms. Some varieties like wave petunias are self-cleaning and don’t need deadheading.
Protect plants from early frost with row covers or old sheets. A light frost won’t kill most annuals if you cover them overnight. Remove covers during the day.
Frequently Asked Questions
What annuals bloom the fastest in Saskatchewan?
Marigolds and nasturtiums bloom fastest, usually within 6-8 weeks from seed. Calendula is also quick and handles cool soil well.
Can I grow these annuals from seed directly in the garden?
Yes, most of these annuals can be direct-sown after the last frost. Marigolds, nasturtiums, sunflowers, zinnias, cosmos, and calendula all germinate quickly in warm soil. Petunias and snapdragons are better started indoors or bought as transplants.
How do I protect annuals from Saskatchewan’s wind?
Plant in sheltered spots near fences or buildings. Use windbreaks like tall perennials or shrubs. Stake tall plants like sunflowers and tall snapdragons. Choose compact varieties that are less prone to wind damage.
What annuals tolerate partial shade in Saskatchewan?
Nasturtiums, calendula, and snapdragons handle partial shade well. Petunias also bloom in partial shade, though they produce fewer flowers. Most other annuals need full sun for best performance.
How often should I water annuals in containers?
Check daily during hot weather. Containers may need watering once or twice a day when temperatures exceed 30°C. Stick your finger in the soil; water when the top inch feels dry. Use saucers under pots to catch excess water.
Final Tips For Success
Start small if you’re new to gardening. Pick 3-4 varieties from this list and see how they do. You can always expand next year.
Keep a garden journal. Note what you planted, when it bloomed, and any problems you encountered. This information is invaluable for planning next year’s garden.
Don’t be afraid to experiment. Some years are better for certain flowers than others. Weather varies, so what works one year might not work the next.
Enjoy the process. Gardening is supposed to be relaxing, not stressful. These easy annuals will give you beautiful blooms with minimal fuss, leaving you more time to sit back and enjoy your Saskatchewan summer.
Remember, the key to success with the easiest annual flowers to grow in saskatchewan is choosing varieties that match our climate. Stick with these proven performers and you’ll have a colorful garden all season long.