Introduction
There is a specific kind of magic that happens in late summer when the first 'Café au Lait' dahlia opens in the garden. For many of us, this variety is the reason we started growing dahlias in the first place. Its massive, pillowy blooms and sophisticated shades of creamy blush and champagne make it a showstopper that feels both high-end and home-grown. Whether you are dreaming of cutting stems for a backyard wedding or simply want to impress your neighbors with dinnerplate-sized flowers, 'Café au Lait' is a rewarding choice that is surprisingly easy to manage.
At Longfield Gardens, we have spent years trialing different dahlia varieties to see which ones truly live up to the hype. 'Café au Lait' consistently earns its place as a top performer in our trial gardens and a favorite among home gardeners across the country. This guide is designed to help you navigate the simple steps of planting, caring for, and harvesting these iconic flowers so you can enjoy a season full of spectacular color.
Growing these dahlias is a straightforward process that rewards a little bit of patience with a lot of beauty. By focusing on a few gardening basics—like proper timing and sturdy support—you can transform a humble tuber into a lush, flowering shrub. Our goal is to make your gardening experience as enjoyable as the blooms themselves. For timing, our Hardiness Zone Map can help you match planting to your climate.
Understanding the Appeal of Cafe au Lait
The 'Café au Lait' dahlia is a member of the "dinnerplate" category, a name given to dahlias that produce exceptionally large flowers. These blooms can easily reach 8 to 10 inches in diameter, making them a focal point in any landscape. What truly sets this variety apart, however, is its color. Unlike many dahlias that feature bold, saturated primary colors, 'Café au Lait' is famous for its "milky coffee" palette.
The color is famously variable, which is part of the fun of growing it. Depending on the soil nutrients, temperature, and light levels, your blooms might range from a pale, creamy ivory to a soft peach or a dusty, blush pink. This chameleon-like quality makes it a favorite for floral designers who need a bridge between different color schemes. The petals are often slightly ruffled or "toothed" at the ends, giving the flower a soft, romantic texture that resembles silk.
While 'Café au Lait' is the most famous, you may also see variations like 'Café au Lait Royal' (a soft pink) or 'Café au Lait Rosé' (a deeper magenta-pink). All of these share the same vigorous growth habit and impressive flower size. They are upright, bushy plants that typically reach 3 to 4 feet in height, creating a substantial presence in the garden bed from mid-summer until the first frost. If you want to compare bloom timing, see When Do Cafe au Lait Dahlias Bloom?.
Choosing the Best Location
Success with 'Café au Lait' starts with picking the right spot in your yard. Because these plants put so much energy into producing large leaves and massive flowers, they have specific needs for light and soil.
The Power of Full Sun
Dahlias are sun-loving plants. For the strongest stems and the most prolific blooms, choose a location that receives at least 6 to 8 hours of direct sunlight each day. While they can grow in partial shade, you will likely find that the stems become "leggy" or stretched as they reach for the light. In very hot climates, such as the Deep South, a spot with morning sun and some afternoon filtered light can help prevent the plants from wilting during the hottest part of the day.
Soil and Drainage
The "right place" for a dahlia is a spot where the soil is rich but well-draining. "Drainage" is a term gardeners use to describe how quickly water moves through the soil. If you have heavy clay soil that stays soggy after a rain, the tubers may struggle. You can improve drainage by adding organic matter like compost or well-rotted manure to the planting area.
If your garden soil is naturally very heavy, consider planting your 'Café au Lait' dahlias in raised beds. This keeps the tubers safely above the "water line" and allows the soil to warm up faster in the spring.
Giving Them Space
It is tempting to crowd plants together to get a full look quickly, but 'Café au Lait' needs room to breathe. Proper air circulation is one of the best ways to keep your plants healthy. We recommend spacing the tubers about 18 to 24 inches apart. This allows each plant to reach its full width without competing for nutrients or trapping too much moisture among the leaves.
When to Plant for Best Results
Timing is often more important than any specific gardening "trick." For dahlias, the most important rule is to wait for the warmth. Because dahlias are native to the high plateaus of Mexico, they are not frost-tolerant and they do not like cold, wet soil.
Wait for the Warmth
You should plant your 'Café au Lait' tubers at the same time you would plant tomatoes or peppers. This is usually about two weeks after the last expected frost in your area. If you plant too early into cold soil, the tuber will sit dormant and may even rot before it has a chance to sprout. A good rule of thumb is to wait until the soil temperature reaches about 60°F. For more planting guidance, read When and Where to Plant Dahlias.
Our Shipping and Your Schedule
We time our shipments from Longfield Gardens based on your USDA hardiness zone. We aim to have your tubers arrive about two weeks before the ideal planting time for your region. When your package arrives, open it immediately to let the tubers breathe. If it is still too cold to plant outside, store the tubers in a cool, dark, and dry place (like a basement or garage) until the weather settles. See our Shipping Information for details.
Starting Indoors
If you live in a region with a very short growing season, you can give your dahlias a head start. About 4 to 6 weeks before the last frost, plant the tubers in large pots filled with slightly damp potting soil. Keep them in a sunny window or under grow lights. This "pre-sprouting" gives you a jump on the season, leading to earlier flowers once they are moved into the garden.
What to do next:
- Check your local frost dates to determine your planting window.
- Identify the sunniest spot in your garden with good drainage.
- Prepare the soil by mixing in a few shovels of compost.
- If the ground is still cold, store your delivered tubers in a cool, dark spot.
How to Plant Cafe au Lait Tubers
When you look at a 'Café au Lait' tuber, it might look like a cluster of small potatoes or a single, long tuber. Both types will grow into beautiful plants. The key is identifying the "eye"—the small bump or sprout where the new growth will emerge.
Digging the Hole
Dig a hole about 6 to 8 inches deep and about a foot wide. If you are planting a cluster of tubers, you will want the hole to be wide enough to accommodate the whole clump without snapping any of the "necks" (the thin parts where the tubers connect to the main stem). For a deeper dive, see How Deep Do Dahlias Need to Be Planted?.
Positioning the Tuber
Place the tuber horizontally in the bottom of the hole. If you can see the eye or a small sprout, point it upward. If you aren't sure where the eye is, don't worry—the plant will naturally find its way toward the surface. After placing the tuber, cover it with 2 to 3 inches of soil. Do not fill the hole all the way to the top yet; you can add more soil as the sprout grows taller.
The Golden Rule of Watering
This is the most common place where gardeners run into trouble: do not water your dahlias immediately after planting. Unless your soil is bone-dry, the tuber has enough moisture inside it to start growing. Adding extra water to the soil before there are roots to drink it can lead to rot. Wait until you see the first green shoots poking through the soil before you begin a regular watering routine.
Essential Care for Strong Growth
Once your 'Café au Lait' dahlias have sprouted, they grow very quickly. Providing the right care during the early summer will ensure they have the strength to hold up those massive autumn blooms.
Watering Correctly
Once the plants are about 6 inches tall and have several sets of leaves, they will need consistent moisture. The goal is to water deeply a few times a week rather than giving them a light sprinkle every day. Deep watering encourages the roots to grow further down into the soil, making the plant more stable and drought-resistant. If you have sandy soil, you may need to water more frequently; for clay soil, check the moisture level an inch down before adding more.
Fertilizing for Flowers
Dahlias are "heavy feeders," meaning they use a lot of nutrients from the soil. However, using the wrong fertilizer can lead to lots of leaves and very few flowers. Avoid high-nitrogen fertilizers (like those used for lawns). Instead, look for a balanced garden fertilizer or one that is slightly higher in phosphorus and potassium (the second and third numbers on the bag, like a 5-10-10). Start fertilizing once the plants are about a foot tall and continue every 3 to 4 weeks until the end of summer.
Mulching
Adding a 2-inch layer of mulch around the base of your plants (but not touching the stem) helps keep the roots cool and retains moisture. This is especially helpful for 'Café au Lait' because it originates from cool mountain climates and appreciates a little protection from the baking summer sun.
Supporting Your Dinnerplate Dahlias
Because 'Café au Lait' produces such large, heavy flowers, the plants require physical support. Without it, a summer rain or a gust of wind can easily snap the stems.
Staking Early
The best time to stake a dahlia is the day you plant it. If you wait until the plant is large, you risk driving the stake through the tubers underground. Use a sturdy wooden or metal stake that is at least 5 feet tall. Drive it about 12 inches into the ground next to the tuber. As the plant grows, use soft garden twine to loosely tie the main stem to the stake every 12 inches.
The "Pinch" for More Blooms
If you want a bushier plant with more flowers, you should "pinch" your dahlias. When the plant is about 12 to 16 inches tall and has 3 or 4 sets of leaves, use your fingers or garden snips to remove the very top of the center stem.
It feels counterintuitive to cut a healthy plant, but this simple step signals the dahlia to stop growing one single tall stalk and instead start growing side branches. This results in a stronger, shorter, and more productive plant with more stems for cutting.
Deadheading
To keep the flowers coming all season long, you must practice "deadheading." This simply means cutting off the flowers once they begin to fade. If you leave the old flowers on the plant, it will shift its energy into producing seeds. By removing them, you tell the plant to keep making more blooms. When you deadhead, don't just snip the flower head; cut the stem back to where it meets a larger branch to keep the plant looking tidy.
Easy Wins for Better Plants:
- Stake your plants at the time of planting to protect the tubers.
- Resist the urge to water until you see green shoots.
- Pinch the center stem at 12 inches to double your flower count.
- Use a low-nitrogen fertilizer to prioritize blooms over foliage.
Harvesting Cafe au Lait for Arrangements
One of the greatest joys of growing 'Café au Lait' is bringing those massive, champagne-colored blooms inside. However, dahlias require a different harvesting technique than roses or lilies.
The Best Time to Cut
Dahlias do not open much once they are cut. If you pick a tight bud, it will likely stay a tight bud in the vase. For the best results, harvest your 'Café au Lait' blooms when they are about three-quarters of the way open. Look at the back of the flower; the petals should feel firm and fresh. If the back petals are starting to feel papery or look dehydrated, the flower is past its prime.
Morning is Best
The best time to cut flowers is in the early morning when the plants are fully hydrated. Bring a clean bucket of cool water out to the garden with you and place the stems directly into the water immediately after cutting. This prevents air bubbles from forming in the stem, which can cause the flower to wilt prematurely.
Maximizing Vase Life
'Café au Lait' typically lasts about 4 to 5 days in a vase. To get the longest life, strip any leaves that would be below the water line, as rotting leaves create bacteria that shorten the flower's life. Change the water every day and give the stems a fresh snip every other day. For more tips, see How to Keep Cut Dahlias Fresh Longer.
For a special event, some growers use a "searing" technique where they place the bottom inch of the stems into very hot (not boiling) water for a minute before moving them to cool water. This can help the flower hydrate quickly.
Managing the Growing Season
Gardening is a journey, and 'Café au Lait' dahlias have their own rhythm throughout the summer and fall.
The Mid-Summer Wait
'Café au Lait' is often slightly slower to start blooming than smaller dahlia varieties. Don't be discouraged if your neighbors' smaller "pompon" dahlias are blooming in July while your 'Café au Lait' is still just a bush of green leaves. These large-flowered varieties need time to build up the energy required for those 10-inch blooms. Most gardeners see their first 'Café au Lait' flowers in August, with the peak of production happening in September when the nights begin to cool down.
Heat and Pests
In the peak of summer heat, you might notice the plant slowing down. This is normal. Continue to water deeply and keep the roots mulched. Watch out for common garden visitors like aphids or spider mites. Usually, a strong blast of water from the hose is enough to knock them off. If slugs are an issue in your area, particularly when the plants are small, use a pet-safe slug bait to protect the tender new growth.
The Fall Grand Finale
Dahlias truly come into their own when the weather cools. You will find that the colors of 'Café au Lait' become more intense and the stems become stronger as autumn approaches. This is the time to take as many photos and cut as many bouquets as possible, as the show continues right up until the first frost.
End of Season Care and Overwintering
When the first frost hits, your dahlia plants will turn black and limp overnight. While it looks sad, the tubers underground are perfectly fine. Depending on where you live, you have two choices for what to do next.
Zones 8 to 11
In warmer climates, dahlias can stay in the ground all year. Cut the stalks down to about 4 inches above the soil and cover the area with a thick layer of mulch (4 to 6 inches) to protect the crowns from winter rain. Every 2 or 3 years, it is a good idea to dig them up and divide them anyway, as the clumps can become too crowded and produce fewer flowers.
Zones 3 to 7
In colder climates, you will need to "lift" your tubers if you want to grow them again next year.
- Wait: Wait about a week after the first frost for the tubers to "cure" in the ground.
- Dig: Carefully use a garden fork to lift the clumps, starting about a foot away from the stem to avoid slicing the tubers.
- Clean: Shake off the excess soil and let the clumps dry in a protected, shady spot for a day or two.
- Store: Place the tubers in a box filled with slightly damp peat moss, vermiculite, or wood shavings. Store the box in a cool, dark place that stays between 40°F and 50°F. Check on them once or twice during the winter to make sure they aren't shriveling or rotting.
Dividing for Next Year
One of the best things about 'Café au Lait' is that it is a prolific tuber producer. One tuber planted in the spring can easily become a clump of 5 to 10 tubers by the fall. In the spring, you can use a sharp, clean knife to divide these clumps, making sure each piece has an "eye." This is an easy way to expand your garden or share this beautiful variety with friends.
Conclusion
Growing 'Café au Lait' dahlias is one of the most rewarding projects a home gardener can undertake. From the moment the first sprout breaks the soil to the day you harvest a bouquet of champagne-colored blooms, the process is a reminder of how much beauty can come from a single tuber. By choosing a sunny spot, being patient with the watering, and providing a little structural support, you can enjoy these world-class flowers in your own backyard.
As you plan your garden, remember that gardening is a continuous learning experience. Every season brings different weather and new observations. We are here to support you with high-quality tubers and the practical advice you need to succeed.
- Wait for warm soil before planting out in the spring.
- Support the stems early to prevent damage from wind and rain.
- Harvest frequently to encourage the plant to keep producing flowers.
We invite you to explore our selection at Longfield Gardens and start your journey toward a more beautiful, bloom-filled summer.
Growing 'Café au Lait' is less about complex "secrets" and more about getting the basics right. When you give these dahlias the sun, space, and support they need, they will reward you with a spectacular display that lasts for months.
FAQ
When will my Cafe au Lait dahlias start to bloom?
Most 'Café au Lait' dahlias begin blooming in mid to late summer, typically from August through September. Because they are a large "dinnerplate" variety, the plants spend the early part of the season building a strong root system and foliage before they have enough energy to produce their massive flowers. Once they start, they will continue to bloom until the first frost of autumn. If you're planning cut flowers, the dahlia best sellers collection is a good place to compare forms.
Why are my Cafe au Lait flowers different colors on the same plant?
Variation is a natural and celebrated trait of the 'Café au Lait' variety. The blooms can range from creamy ivory to soft blush or pale peach depending on several factors, including soil temperature, the amount of sunlight the plant receives, and the nutrients available in the soil. Cooler weather in late summer often brings out deeper pink or blush tones in the petals. For more on size and habit, see How Tall Do Cafe au Lait Dahlias Grow?.
Do I really need to stake my Cafe au Lait plants?
Yes, staking is essential for this variety. The flowers of 'Café au Lait' are incredibly heavy, and the plants themselves can reach 4 feet in height. Without support, the weight of the blooms—especially after a rain—can cause the stems to bend or snap. It is best to put your stakes in the ground at the time of planting to avoid damaging the tubers later on. If you want more general planting help, see How Do You Plant Dahlias in the Ground?.
Can I grow Cafe au Lait dahlias in containers?
You can grow 'Café au Lait' in containers, but you will need a very large pot—at least 5 to 7 gallons—to accommodate the plant's large root system and height. Ensure the container has excellent drainage holes and use a high-quality potting mix. Since pots dry out faster than the ground, you will need to water more frequently, and staking is even more important to prevent the pot from tipping over. For broader seasonal planning, see our new dahlia collections.
