Botanical Interests Cut Flowers Seeds I'm Growing in March 2025

One of my favorite parts of late winter is starting seeds for my cut flower garden. There’s something so rewarding about watching tiny seeds transform into beautiful blooms that will eventually fill my unique locally grown bouquets. March is a critical month for getting a head start on hardy annuals and slow growers, ensuring I have plenty of flowers for spring and summer harvests.

This year, I’m growing several varieties from Botanical Interests, a seed company I love for their high-quality seeds and beautifully illustrated packets (seriously, I could frame them!).  From fragrant Stock to cheerful Rudbeckia, here are the cut flowers I’m growing this March, when I sowed the seeds here in Tennessee (zone 7- last frost date April 15th-ish!)  and why they deserve a place in any flower garden.

Poppies- Delicate and Dreamy Blooms & Pods

There’s something magical about Poppies. Their delicate petals look almost paper-thin, yet they create such a bold impact in the garden and in floral arrangements. While they can be tricky seeds to germinate outside, once you get them blooming and  producing seed,  they will pop up year and year!

I’m growing 3 varieties of Poppies from Botanical Interests:  'Lauren's Grape', 'Pandora' and 'Mother of Pearl'. All breathtaking varieties with deep, ruffled petals in burgundy's, pinks and violet shades.

The best part? After the blooms fade, the seed pods can be used in dried arrangements! If you don't cut the seed pod, it will form so many poppy seeds inside that you won't evenn know what to do with them all!

Rudbeckia- Long Lasting, Cheerful Blooms

No late Spring into summer bouquet is complete without Rudbeckia. These daisy-like flowers add a wildflower feel to arrangements.

This season, I’m growing ‘Cherry Brandy’, which has stunning deep, rich tones of maroon-red velvet blooms.

Since Rudbeckia is a hardy perennial in some zones, I like to start them indoors early (fall and late winter) so they have a strong root system when I transplant them outside.

Stock- Fragrant, Early Blooms

If you've never smelled the incredible clove-like fragrance of Stock, you must grow these beauties! These cool-season beauties produce tall, ruffled blooms with an incredible fragrance that makes any bouquet memorable! 

This year, I’m growing Botanical Interests Stock ‘Column Blend’, a mix of soft pastels and deep, rich tones. Stock prefers cool weather, so I started these seeds indoors early February and will be transplanting them into crates to grow in the next few weeks.

The key to success? If a frost or freeze is in your forcast, cover the plants with frost cloth is necessary, in my book. They need cooler temps to grow well but not too cold!  Providing 16 hours of day of light as seedlings and keeping them cool (goal- 75 degrees or less) —if they get too warm, they’ll won't bloom well. 

Statice- the Perfect Dried Flower

Statice is one of my must-grow flowers every year, especially because it holds its color beautifully when dried. It’s the backbone of many dried floral arrangements and also adds a fun, textural element to fresh bouquets.

This season, I’m growing Botanical Interests Statice ‘Cotton Candy Blend’, which includes shades of lavender, purple and pink. The trick with Statice is to start it early, as it needs time to mature before summer heat arrives. I started mine the beginning of February. I also love that it’s incredibly low-maintenance—once established, it thrives with minimal fuss.

Sweet Peas- a Cottage Garden Favorite

I will not go a Spring without growing Sweet Peas! I look forward to sticking my nose in their every so fragrant blooms! Sweet Peas are the epitome of old-fashioned charm. They also add an elegant, trailing element to floral designs.

This year, I’m growing Botanical Interests Sweet Pea ‘Bouquet Blend’, a collection of long sturdy stems and large, ruffled flowers which makes for a great bouquet.  Since sweet peas prefer a longer pot to grow in to stretch their roots, this year I am experimenting with growing them in the Seed Snail Method.  So far, it is working fantastic for sweet peas! If you are curious about this method, check out this Instagram of the lady that make it popular!

My best tip? If you are having trouble germinating Sweet Peas, soak the seeds overnight before planting to speed up germination. 

Craspedia- Golden Drumstick Flower

Craspedia, also known as Billy Buttons, is a unique cut flower that adds an unexpected pop of texture to arrangements. The round, golden-yellow blooms sit atop wiry stems, making them a fun accent flower in bouquets.

I am growing Craspedia 'Drumstick Flower' from Botanical Interests this year. Kinda crazy but this is my first time growing Craspedia- well, I did start seeds of it in 2018 but I honestly can't remember what happened. I don't remember seeing any blooms! I am specifically  growing this flower to dry. I can't wait to see it in person!

Phlox- Whimsical Blooms

Phlox is one of those underrated flowers that deserves more attention in cut flower gardens. I have several perennial phlox that has saved me a time or two when I needed more flowers for bouquets! The clusters of tiny blooms create a soft, airy effect in bouquets.

This year, I’m growing ‘Phlox ‘Cherry Caramel’ from Botanical Interests, a stunning variety with unique peachy-rose tones and dark centers. It’s a real showstopper! Pollinators are also attracted to these fragrant blooms!

In conclusion, March is such an exciting time for seed starting, and I can’t wait to see these Botanical Interests flowers grow and bloom in the coming months. Starting from seed not only saves money but also allows me to grow unique varieties that aren’t always available as transplants.

If you’re planning your cut flower garden, I highly recommend trying some of these varieties! Shop my special link below and use my discount code for 5% off!

                                               Discount Code: BLOOMINGJOY

This post contains affiliate links and I make a small commission when you purchase through my link. Thank you! 

Have you grown any of these flowers before? Let me know in the comments what’s on your seed-starting list this spring.

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