Plant your ‘Autumn crocuses’ now

Plants will bloom in September.

August is the only time of year to plant an easy-to-grow giant crocus that blooms a few weeks later – in September.

Fall-blooming colchicums go by the name of Autumn Crocus, although they are not really a crocus at all.  In fact, they belong to the lily family and are native to the Mediterranean region.

Colchicum bulbs become huge and can, over time, produce 19 to 25 flowers, one right after the other, until they all open in a profusion of colour. A lady, who used to grow thousands in her backyard in Vancouver told me it takes about two years for a small bulb to grow into a huge specimen, at which point it splits into four smaller ones. Small bulbs will produce five to seven flowers; mid-sized bulbs will have about a dozen blooms.

I have learned the hard way that these bulbs love a sunny, well-drained, yet moist location, with average soil. One year we planted them in several shady spots, only to have them gradually deteriorate to the point of no return. You can leave them in the ground to naturalize, if that is the effect you wish to have. A single corm of a large colchicum hybrid can easily multiply to  cover nearly 900 square centimetres of garden.  Just imagine what a few well-placed groupings throughout your garden can do. It is best to plant them about 10 cm deep and about 15 to 20 cm apart.  They need some room, not only to multiply, but also for the huge foliage which will develop the following spring.

These fascinating bulbs can actually bloom indoors simply by leaving them sitting on a windowsill. It’s best to put them in a saucer on about two inches of gravel.  The flowers won’t last quite as long, nor will they have the same intense colour, but they will bloom and can still be planted outside to grow on for next year.  Each year in late April, just as the tulips are nicely in flower, huge masses of strap-like leaves appear and grow to about one foot in height. After two to three weeks, they disappear as suddenly as they arrived, having provided all the food the bulb needs.

Colchicums are quite hardy and do well from zones one through nine. Colchicum speciosus, which blooms in September and October, is most often a bright violet-pink, while Colchicum album is the seldom-seen beautiful white variety. Among the hybrids, Lilac Wonder is the most popular with its attractive lilac-pink flowers. The double purple blooms of Waterlily are unusual and quite beautiful, but its heavy blossoms are often knocked down and spoiled by autumn rains.

Colchicums should be planted in areas where they can be naturalized without interfering with other plants.  Underplanting around flowering shrubs, like white altheas or P.G. hydrangeas, makes a lovely contrast when the bulbs bloom each fall. Another classic combination is to plant them under white snowberries (Symphoricarpos alba) for a great autumn display. Colchicums are only dormant in July and August, so you have to be quick on the draw to get them planted immediately for any kind of showing this fall, but they are well worth the effort, believe me. The main bulb supplier for BC has just received their shipment for distribution to garden stores this week, so for this weekend and next week, colchicums should be widely available.

I know there are many gardens out there that really need a lift in September, and these precious fall crocuses can add that little spark of colour. Think of them as fall messengers reminding us that in spring our gardens will be inundated with colour from their peers.

Brian Minter is a master gardener who operates Minter Gardens in Chilliwack.

 

Surrey North Delta Leader

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Surrey council to consider a $150 FOI fee for attendance requests at city facilities

This is expected to come before council during tonight’s council meeting, on Monday July 13.

Heritage rail to remain closed for both July and August

Fraser Valley Heritage Rail Society may open Cloverdale Station in September

Delta launches online engagement portal

“Let’s Talk Delta” offers variety of feedback methods including surveys, polls, forums and Q&A boards

Story of ‘A Mother’s Journey to Adoption’ told in book by first-time Surrey author

In the 1990s, Raj Arneja and husband Gurpreet adopted two children in India

Proposed White Rock development a ‘nightmare’ for Elm Street neighbours

Density, traffic, loss of views among chief concerns of residents

B.C. records 62 new COVID-19 cases, two deaths since Friday

Province has just over 200 active cases

Hotel rooms for B.C. homeless too hasty, NDP government told

Businesses forced out, but crime goes down, minister says

Wage subsidy will be extended until December amid post-COVID reopening: Trudeau

Trudeau said the extension will ‘give greater certainty and support to businesses’

B.C. government prepares for COVID-19 economic recovery efforts

New measures after July consultation, Carole James says

COVID-19 exposure on Vancouver flight

The Air Canada 8421 flight travelled from Kelowna to Vancouver on July 6

Double homicide investigation leads Vancouver police to Chilliwack

A VPD forensics unit was in Chilliwack Saturday collecting evidence connected to East Van murders

VIDEO: Former Abbotsford resident giving away $1,000

Langley native Alex Johnson creates elaborate treasure hunt to give away cash

Tree planters get help with COVID-19 protective measures

Ottawa funds extra transportation, sanitizing for crews

UPDATE: Abbotsford shooting victim was alleged ‘crime boss,’ according to court documents

Jazzy Sran, 43, was believed to have been smuggling cocaine across the border

Most Read