Ranunculus flowers are a must in every flower enthusiast’s garden. They’re sure to bring color and life to your home with their bright and colorful petals.
That said, growing these flowers from seeds requires meticulous care. You have to watch the climate, the temperature, the soil, the moisture, as well as the amount of sunlight they receive.
In this article, we’ll explain the entire process of how to grow Ranunculus from seed. We’ll also throw in a few tips that will help you take care of your seedlings so they grow healthy and beautiful.
Let’s get right into it!
All You Need to Know About Growing Ranunculus
Here are some important things you need to know about Ranunculus flowers before we dive into how to grow them.
They’re Cool Climate Flowers
Ranunculus are cool climate flowers. This means that they thrive in cooler areas. For this reason, you can find them mostly in Europe, Northern Africa, and Southwestern Asia.
These flowers don’t do well in tropical climates. They need a long, cool period to establish and grow healthy and beautiful flower bulbs.
If you live in regions with a warm climate all year, Ranunculus may not be a good fit for your home garden. Although, there are some tricks we’ll share about growing them indoors if you really want a plant or two for your home.
Seeds vs Corms
The most common way of planting Ranunculus is through their corms. It’s the easiest way and was the most recommended by gardeners.
The problem with planting using corms is the risk of Xylella fastidiosa that might come with them. It’s a deadly bacterial disease for plants and flowers, including Ranunculus.
For those reasons, gardeners and planters all over the world have been resorting to seed growing to prevent the disease from spreading.
Users Also Read: How to Dry Ranunculus: Best Ways and Care Tips
When and Where to Plant Ranunculus Seeds
Now that you know more about Ranunculus and why seed-growing is safer than corms, let’s jump right into how to grow them.
1. Climate
The climate is crucial when growing Ranunculus from seeds. If you don’t get your timing right, you might end up with unhealthy plants or, worse, dead plants.
As we mentioned earlier, Ranunculus loves cool weather and resents hot temperatures. It’s important to keep that in mind when trying to plant their seeds.
The seeds need three to four months to mature and bloom. Therefore, early autumn or late summer would be the best times to plant them, and they should then be maintained throughout the hot days.
Afterward, you’ll have to wait for the colder months or winter for the Ranunculus to bloom and flower. That’s around September or October, depending on the time of your planting.
2. Temperature
There’s a bracket of temperature that Ranunculus seeds like for them to thrive well. Thus, you should carefully choose the spot in which you’ll plant them in your garden.
A hot temperature isn’t ideal, but you should avoid the extreme cold as well. You should make sure that the seeds germinate at a constant temperature of 50°F to 60°F.
3. Soil
Another vital thing to consider when you’re planting these flowers from seeds is your potting soil. A well-draining, sandy soil, preferably enriched with compost organic matter, like manure, is what we recommend.
If your garden soil is poor, you can mound up the spot where you’re planning to plant your seed. However, it’s better to have a separate potting tray so that you can control the elements well.
Don’t forget to add some enriching materials to your plot mix as well. Worm castings, cow manure, chicken manure, or horse manure are all good options for this.
In planting the seeds, you only need to press them shallowly on your plot. The common rule of thumb when planting flower seeds is to plant them about two to three times the seed’s size deep.
Don’t cover them so that you can keep them moist until they germinate. The recommended seed number per plant is three to four pieces.
4. Transplanting
The germination of the seeds starts around 14 to 28 days after you plant them. When four to five true leaves appear on the Ranunculus seedlings, you can transplant them into bigger pots.
Make sure that you don’t crowd the seedlings in a small area. Your plant spacing should be at least 10 inches for optimal growth and to prevent diseases and pests.
Read more: How Long Do Ranunculus Last?
Tips on Maintaining Your Ranunculus Seedlings
While growing Ranunculus from seeds is tough, taking care of the seedlings poses its own challenges. So, how do you maintain them?
Here we’ll discuss some tips for taking care of your seedlings, whether you plant them indoors or outdoors.
Maintaining Indoor
Ranunculus plants make good indoor flowers. They enjoy bright, indirect sunlight, so it’s best to place them near your east-facing windows for them to thrive.
The pot and the soil are crucial for your indoor Ranunculus. Make sure that your pot is deep enough for the root system. Terracotta pots or delftware bowls are good choices.
You should also keep your soil moist but never soggy. Soggy or wet soil can lead to bulb rotting and might kill your Ranunculus.
That brings us to watering. You should water these plants just enough to keep your potting soil from drying. Feeding them with water-soluble fertilizer when they’re growing until they bloom is best.
Maintaining Outdoor
Maintaining your Ranunculus outdoors would require other things to consider. You need to look at their positioning, soil, as well as drainage.
Planting them in an area with partial or full sun is best. Look for shaded spots along your garden borders, under trees, or under the shade of your house.
In outdoor Ranunculus flower beds, your soil should have appropriate drainage. For this, it’s best to plant them in loamy, sandy soil that doesn’t stay wet long after every rain.
If the spot you’ve chosen is susceptible to flooding or water puddles, try elevating your flower beds. Improve drainage by mounding the soil or by adding a few inches of compost material to the flower bed.
Adding some mulch is also beneficial whether you plant your Ranunculus indoors or outdoors. This will help by cooling down their roots when temperatures rise.
Dormancy Period of Ranunculus
One thing to remember is that these flowers go dormant during the summer. When this happens, the plant will start to yellow and wilt naturally, so you don’t have to worry about this.
Once the foliage is dead, simply cut the dead plant from the base. This process is called dead-heading, and its purpose is to encourage new growth and restart the life cycle of your Ranunculus.
It’s important that you keep watering the plant until the foliage dies naturally. You also need to feed them with bulb food so that you can replant the corms for the next season.
Final Thoughts
Growing Ranunculus from seed isn’t easy. These plants need constant and meticulous care if you want them to grow and bloom into beautiful flowers.
Remember that the climate, temperature, soil, drainage, and amount of sunlight are all crucial factors when growing these flowers from seeds.
That said, we hope we answered all of your questions about how to grow Ranunculus from seed. Remember to follow this guide and you’ll have Ranunculus flowers blooming in your garden or inside your house in no time.
Here’s an article about growing flower seeds you might find interesting: How to Plant Flower Seeds in Your Home Garden.