• Ask Mark
    • Search the Library
    • Mark’s Blog
    • eNewsletter / Subscribe
    • Books
    • Links
  • Cullen’s Foods
  • Trees For Life
  • Events
    • Gardening Communities
  • About Mark
    • Mark and Ben’s Bio
    • Book Mark as a Speaker
    • Mark in the Media
    • Contact Us
March 1, 2011

The Countdown to Spring. Starting Seeds, Bulbs and Forcing Flowering Shrubs.

~ March 2, 2011

For many gardeners, March is the start of the growing season. While you are waiting for the temperature to warm up and spring to officially arrive you can keep busy with a number of activities. Starting seeds indoors, potting up tuberous begonias and forcing blooms on cut branches are just a few ideas to get you thinking about spring.

Starting Seeds Indoors:
Always check the date on seed packets before you make your purchase. The sell-by date ensures that the seeds are fresh and will germinate successfully. It is important to read seed package instructions carefully as each variety of plant will have its own specific needs. Different plants and vegetables have different maturity requirements and this information will be listed on the seed packet. Seeds which should be started in March include Asters, Carnation, Dianthus, Dusty Miller, Nicotiana, Pansy, Phlox, Portulaca, Salvia, Snapdragon, Celery, Eggplant, and Peppers. You can wait until early April before starting Castor Bean, Celosia, Dahlia, Marigold, Cauliflower, Cabbage, Cucumber, tomatoes, watermelon and Onion.

Tuberous Begonias:

If you are searching for an impressive plant for a shaded area in your garden, tuberous begonias are a winner. They can provide a wide range of flower and leaf colour in areas of the garden which do not receive a lot of light. This is the time of year to start tuberous begonias, early March. They will need 2 to 3 months before you set them outside at the end of May. Tubers should be started in a shallow tray with a layer of peat moss on the bottom. Place the tubers hollow side up in the moss and add enough peat moss to just cover the tuber. Keep the peat moss slightly moist until the tubers have developed roots. The tray should be kept in a warm spot while the roots form. You will need to transfer your tuberous begonias to a 4″ clay pot once they have developed roots. Make sure the pot has good drainage and use fresh potting soil. Leave the pots in a sunny window until top growth starts. Tuberous begonias can be moved outdoors at the end of May once the danger of frost has passed.

Forcing Blooms on Cut Branches:
Branches of spring flowering trees and shrubs can be cut and forced into bloom indoors. Wait for the flower buds to begin swelling and then harvest the branches with a pair of sharp pruners. Choose branches at random from all parts of the plant to maintain the natural shape. As soon as the branches are cut they should be placed in water. Treat branches like any cut flower and keep the vase full of clean water. Keep branches away from hot air vents and heat sources to prolong the life of the blooms. A short list of branches which are easy to force indoors includes: Forsythia, Camellia, Redbud, Dogwood, Flowering Cherry, Crabapple, Witch Hazel and Pussy Willow. Once a pussy willow branch has produced its catkins (fuzzy flowers) you have two options. If you remove the branch from water it will dry and can be used in everlasting arrangements. The second option is to leave the branch in water and allow the catkins to mature and fall off. You will see new leaves emerge and the branches will take root. Plant your new pussy willow outdoors once the danger of frost has passed.

A Reminder that Canada Blooms comes to Toronto, Direct Energy Centre March 16 to 20th. Get your discounted tickets on line at http://www.canadablooms.com/

← Previous post
Veggie Garden Primer

Next post →
Grow Your Own

Search

Recent Posts

  • Signs of Spring March 27, 2021
  • Around the Acres This Week February 2, 2021
  • Around the Acres This Week January 11, 2021
  • Around the Acres This Week December 9, 2020

Mark’s Blog by Month

Ask Mark

  • eNewsletter
  • Radio/Podcast
  • Magazine article
  • Newspaper column
  • TV

Recent Tweets

Mark Cullen Follow

Best selling Canadian gardening author as seen on TV, radio, online and print.

MarkCullen4
12 Jan

This was a great way to start the new year. Congratulations, Landscape Ontario, on this milestone! Thanks to all who made it happen. We’re looking forward to the next one.

#TreesForLife #Congress #LOCongress #ClimateAction #GoGreen #HOHTC

Reply on Twitter 1613670790612017153 Retweet on Twitter 1613670790612017153 5 Like on Twitter 1613670790612017153 5 Twitter 1613670790612017153
14 Nov

Likewise, Rocco!

Reply on Twitter 1592247424441290752 Retweet on Twitter 1592247424441290752 Like on Twitter 1592247424441290752 3 Twitter 1592247424441290752
3 Nov

The Highway of Heroes Tree Tribute will grow for generations.

Over 2 million trees for the women and men who have served in the @CanadianForces since Confederation. @MarkCullen4 @HOHTribute @CdnTreesforLife
https://toronto.ctvnews.ca/over-two-million-trees-planted-along-highway-of-heroes-in-eight-year-long-tribute-to-veterans-1.6136352

Reply on Twitter 1588203194349285377 Retweet on Twitter 1588203194349285377 3 Like on Twitter 1588203194349285377 5 Twitter 1588203194349285377
3 Nov

A very special day- with thanks for your support going back to the beginning of this campaign!

Reply on Twitter 1587983198251847681 Retweet on Twitter 1587983198251847681 2 Like on Twitter 1587983198251847681 10 Twitter 1587983198251847681

Comments are closed.

About Mark and Ben


Mark Cullen is an expert gardener, author & broadcaster and holds the Order of Canada. His son Ben is a fourth-generation urban gardener and graduate of Guelph and Dalhousie University.
More

Find Mark On

Sponsored Links

Highway of Heroes cullensfoods Share Agriculture Foundation Harrowsmith
© Mark Cullen. Go to top ↑