How To Grow Anemone & Ranunculus

October 26, 2021 3 Comments

Every year we grow anemones and ranunculus. Both are a cool-season crop and produce multiple blooms per plant. Few spring cut flowers can rival their flower size and color making them an early staple here on the farm.

In our zone 5/6, the winters are too harsh, so we treat them as annuals with the same growing methods. Lower temperatures are needed for growth (mid to high 50F range is best) with protection from freezing temperatures (25F or below). They will not tolerate long periods of warm and hot days (70F or above). Under these conditions, the plants are short-lived and produce less desirable blooms.

If you are in the Northern US wanting to grow outside, hold on to your corms. Store them somewhere cool and dry. I have used my pantry, basement or an old garage that doesn’t freeze. Wait until late winter or early spring to plant. Late winter is 4 to 6 weeks before spring thaw begins. This could be any time between February to May, depending on your climate. I like to use Valentine's Day as a good time to get them started here. Zone 8 or above can plant outside in the fall.

To get them started, soak for about 4 hours before planting. Corms arrive dry & shriveled. Once hydrated, they will double in size. This will allow for them to come into growth much more quickly. Excessive soaking will make them rot.

Pro tip! Pre-sprout or pre-plant your corms inside while the chance of frost still exists outdoors. Any small pot with a drain hole at the bottom will do the trick (like a yogurt container with a puncture hole). We use the trays as seen below because we grow in larger numbers, see bottom of article for what we use.

Place a general all-purpose potting mix into the bottom of your container, then corm, allowing for 2 inches of potting mix to top off the corm. Keep potting mix moist but not soggy. Blooms will show a few weeks earlier. Pre-sprouting them in late February or by the first day of spring can give a jump start for when planting is ready outdoors.

Ranunculus at Rooted Flowers presprouted

Select a location so they can receive full sun. The growing area should be well drained and receive good air circulation. With a maximum growing height of approximately 14-18 inches, consider working these plants into the front border of a garden landscape.

Plant your corms when the soil is fairly dry. Wet soil packs tightly and slows plant growth. If you can crumble the soil between your fingers, it is dry enough for digging and planting. Plant to a depth of 2-3” at 6 inches apart. If you have room, ranunculus can be spaced to 9” a part. Ranunculus in a flower bed at Rooted Flowers

Ranunculus in a flower bed at Rooted Flowers

A general practice is to apply 2-3 inches layer of compost and organic fertilizer into the soil. This will help to replenish the nutrients extracted during the growing season.

Pro tip! The key to healthy plants is healthy soil. Test your soil. Most test results make recommendations based on your garden’s needs that will help to resolve imbalances like pH level or nutrient deficiencies. When these elements are out of whack, your plants do not have access to the nutrients they need to grow. University of Massachusetts Amherst is our local source.

Anemones and ranunculus can also be grown in pots to enjoy anywhere. We recommend 1 plant per 4” pot or multiple if you have a larger container. Once they start to sprout, they need full sun and protection against freezing temperatures. Potting mixes are formulated for ideal growing conditions, so they are ready to plant. Some contain fertilizers mixed in, check the label.

Harvest when you see full color. The above picture shows the angle that flowers should be cut for optimum hydration.

As the temperatures start to rise, plants will begin to yellow and die back. They are preparing to go dormant until cool weather returns. Once the plant looks dead/dried, then pull it out, trim back foliage, clean the corm, let it dry, store in a paper bag with vermiculite or peat. Avoid moisture, sunlight and temperatures below 50F or above 70F. Do not store more than two or three layers deep. Deep piles can generate heat and decay (like composting).

In zones 8-11, they may be treated as perennials, after the foliage has passed, cut foliage down to soil level and leave corms in ground. Ranunculus at Rooted Flowers

If you find your bulbs are under furry pressure, check out this article from The Spruce for defense tips.

For supplies, here's a list of everything we use to get started:

4" Pots (growing less than 50 plants)

Trays (growing more than 50 plants)

Organic Potting Mix

Organic All-Purpose Fertilizer

Labels

You can purchase corms in our online shop here.

We hope you enjoy the fun, beauty and grandeur in your garden!

Rooted Flowers only lists companies and products that we love, use, and recommend. All opinions expressed here are our own and Rooted Flowers does not offer sponsored content or accept money for editorial reviews. If you buy something using the retail links in this post, Rooted Flowers may receive a small commission. Thank you for your support!

3 Responses

Jane Niehaus

January 12, 2023

Very helpful, thank you! And you have the cutest helper.

Crystal

November 12, 2021

Didn’t know about soaking corms for about 4 hours prior to planting…thinking I’m seeing why I don’t have a whole lot of luck with those type of plants (especially every time I buy strawberry & asparagus roots!).

Karly

November 12, 2021

Newbie home gardener here but I’m excited to try – I know you said earlier in the blog that you treat them like annuals due to the weather, so when the season is over and I pull them and dry them, can I reuse them the following year? I’m assuming yes but just want to make sure. No question is a bad one, right?? haha – thanks!

If your comment doesn’t show up right away, don't fret! We have a spam filter that requires we approve most comments before they are published.

Unable to post at this time.

Also in Farm Journal

Seed starting station with grow lights on and seedling tray.

Starting Seeds Indoors: How to Build a Bulletproof Seed Starting Station with Shop Lights

January 24, 2023

Starting seeds can be a tricky business. You've got your little pots, your soil, and your hope for a bountiful harvest, but sometimes it feels like the odds are against you. Maybe your seedlings are too leggy or too damp, or maybe they're just not germinating at all. But don't despair, fellow gardener! We've all been there, and we've got the solution to your seed starting woes. In this blog post, we'll be sharing our foolproof seed starting setup that will have you well on your way to a successful gardening season. So put down that seed packet, grab a cup of coffee, and let's get started!

View full article →

This image depicts a farm owner standing at a window, with a determined expression on their face.

2022 Year In Review

January 12, 2023 6 Comments

Before we get too deep into the New Year, I am taking some time to reflect on all that has happened during the previous year. It can be easy to just look ahead, but taking a moment to reflect on the past can help us to appreciate all that we have accomplished and set intentions for the future.

View full article →

DAHLIAS | GIVEAWAY

November 02, 2022 209 Comments

Our tubers are available for purchase in the Online Shop this Saturday, November 5th @ 10 AM EST. Each order will contain planting instructions and ship to you early April once the risk of cold damage has passed.