Somebody plants tulips on Thanksgiving weekend, then reads a headline about planting in September and spends the next fortnight assuming they have ruined it.
You can plant tulips in October in Ontario, and for most of the province October is not late at all. It is the middle of the window. Southern Ontario gardeners are often better off if they plant tulips in October rather than September, because the soil is finally cool enough for the bulbs to root without sitting in warm ground.
Why October suits Ontario ground
A tulip bulb wants soil that has cooled to roughly 15 degrees Celsius, and it wants four to six weeks of workable ground to push roots out before deep frost. In most of Ontario those two conditions overlap almost exactly with the weeks when you would plant tulips in October.
September soil in the south is often still holding summer heat, particularly in a dry year. Bulbs put in then can sit soft in warm ground, and soft bulbs in a wet autumn are the ones that rot. Waiting for the first proper frost on the lawn is usually a better signal than any date, and in most of the province that frost lands while you can still plant tulips in October.
What hardiness zone is Ontario for bulb planting?
Ontario spans a wide range. The Niagara region and the Toronto lakeshore sit at the mild end, much of the south and east falls in the middle, and the north runs colder. So the far north plants in September, most of the province can plant tulips in October, and the mildest corners can run into November.
When is it actually too late to plant tulips in Ontario?
When the spade stops going in. That is the test. If the blade pushes into the bed cleanly you can still plant tulips in October or later, because the bulbs will root and still get their cold period. Frost on the surface does not count. Ground frozen solid at planting depth does, and in most of Ontario that arrives in late November or December.
How to plant tulips in October without second guessing yourself
Depth first. When you plant tulips in October they go in about 15 to 20 cm deep, pointed end up, which is roughly three times the height of the bulb. The upper end of that range holds the stems steadier in wind and puts the bulb below the reach of most digging.
Space them 10 to 12 cm apart in a bed and closer in a pot, where you want the display full in the first season. Then firm the soil down hard with the flat of your hand, water the bed once to settle it, and pick up any papery skins you dropped, because loose skins are a signal to squirrels when you plant tulips in October.
Do not soak the bulbs beforehand. They go in dry and take up what they need from the soil. Soaking invites rot in a wet October.
If you are running behind, do this
Plant anyway. If you did not quite plant tulips in October, a bulb in cold ground in early November still does far better than a bulb in a paper bag in the garage all winter, and late planted tulips usually flower a week or so later rather than not at all.
If you know a cold snap is coming and you are not ready, throw a few centimetres of leaf mulch or straw over the bed you intend to plant. It keeps the ground open longer and buys you a weekend. Take it off, plant, and put it back.
If the ground has genuinely closed, do not force it. Store the bulbs somewhere cool, dark and dry with air moving around them, and read our notes on how to store flower bulbs before planting so they are not ruined by January.
One thing October planting does not fix
Squirrels. Freshly turned soil over a tulip is a marker they read from the fence, and when you plant tulips in October they are already caching and checking loose ground. Mesh laid flat and pegged at the edges is the fix, and we covered that fully in our guide to stopping squirrels digging up bulbs.
The other approach is to change what goes in the ground. Narcissus, allium, muscari and leucojum get left alone because they taste wrong, and a bed built mostly from those comes up in spring the way you planted it.
What to picture while you are kneeling on wet grass
Late April, the lawn still flat and brown, and a row of colour along the front of the house before anything else in the street has started. That is the return on one cold Saturday in October, and it is the reason people keep doing this.
If a short spring is what frustrates you, the earliest varieties we grouped together for first colour are worth a look, because in a climate like Ontario the first three weeks of colour are the ones that matter most.
Bulbs arrive with us in small lots and we cannot reorder a variety mid season, so what comes off the truck is what there is for the year. Choosing now means your varieties are set aside under your name and handled by hand before they leave, rather than picked over on a shelf once the good ones have gone. The first colour collection is there whenever you want to read through it.
For the timing outside Ontario, we set the whole country out in our guide to when to plant tulip bulbs zone by zone.
If you would rather watch than read, Darrell covers the journey from a bag of tulip bulbs to a field of colour in a short video on our channel.
Why choosing to plant tulips in October is worth deciding now
The cost of getting this wrong is a whole spring rather than a bag of bulbs. Buy at the last minute in late October, take whatever is left on the table, put it into ground you have not checked, and April tells you what happened. Then you either replant next autumn or you give up on tulips, and plenty of people quietly give up.
Second guessing is the other tax. Somebody plants on Thanksgiving weekend, reads a headline about September planting, and spends a fortnight assuming the whole thing is ruined. Search for an answer and Ontario advice mixes with advice for Alberta and for places that barely freeze. That is a lot of worry about a decision that was probably fine.
There is a shared side to it as well. October planting is a job you do with somebody, or at least in front of somebody, and April is when it gets noticed. Neighbours ask. Children who dropped bulbs into the holes remember which corner is theirs. A row of colour before anything else on the street has started is why people kneel on wet grass in the rain.
What we can offer is plain dealing about the stock. Bulbs are checked by hand before they leave, Darrell has more than 25 years of hands on gardening and landscaping behind the choices on the list, and we ship across the country, so being in Ontario is not the problem people expect it to be.
Plant tulips in October with the varieties you chose and April usually looks the way you pictured it. Plant tulips in October with whatever was left over and it is a lottery you paid for.
Frequently asked questions
Can I plant tulips in October in Toronto specifically?
Yes, and October is the natural month for it. The lakeshore holds warmth into early autumn, so September planting often puts bulbs into ground that is still too warm. From early October through the first half of November the soil is usually in good shape, and the spade test tells you when your own garden has closed for the year.
Is November too late to plant tulips in Ontario?
Often not, especially in the south. If the spade still goes in, plant. Bulbs need roughly 12 to 16 weeks of cold to finish forming the flower, and an Ontario winter supplies far more than that even from a November start. Expect the flowers a little later in spring rather than a bed with nothing in it.
What happens if I plant tulips too early in Ontario?
Warm soil is the risk rather than the calendar. Bulbs sitting in ground that is still holding summer heat can soften, rot in a wet spell, or push top growth that gets burned by the first hard frost. Waiting for cool soil costs you nothing, and the bulbs keep perfectly well in the meantime.
Do tulip bulbs need to be watered after October planting?
Water once after planting to settle the soil around the bulbs and close any air pockets. After that, an Ontario autumn normally does the rest. The exception is a dry, mild stretch, when a single deep watering helps roots get going. Bulbs in pots dry out faster and need checking every couple of weeks.
DH Garden Centre
3742 West 10th Avenue, Vancouver, BC V6R 2G4
Open daily, 11:00 to 18:30
604-929-7335
We are on the other side of the country in Kitsilano, so if you are in Ontario we will ship to you. If you are ever out on the Vancouver west side, the door is open daily and we are happy to talk bulbs with anybody who walks in.
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Have a plant question? Bring it to the counter.
DH Garden Centre is at 3742 West 10th Avenue in Kitsilano, Vancouver, open 11:00 to 6:30 every day. Bring the plant, or a photo of the spot you want to fill, and we will look at it with you. If you buy a pot here we repot the plant at the counter, soil included up to 5 litres.
