keep it well watered and put compost around the base. Deadheading spent blooms will extend the flowering period.

If they're outdoors and in the ground, there's not much you can do. If they're in pots, if you have somewhere very cool or chilly, move them to there - the cold will slow them down.

Given that they are corms deadheading isn't going to have much effect on slowing down there flowering if they are in the ground. As Bamboo has already said if they are in pots putting them somewhere cool will help but getting an plant to flower at a specific time is a challenge, that is why florists charge so much for the flowers they sell.

Moon Growe, can you please provide proof or some reference to your statement? Where did you get that information? Providing a cool environment will also slow it down, but again the variety in question is key. Anemomes grow from tubers, not corms.

Here is a reference:

http://www.gardenersnet.com/flower/anemone.htm

Also Moongrowe: You are contradicting your own statement. Please be consistent or provide reason for your change of mind. Read this!

http://www.growsonyou.com/question/show/30236

I also thought Anemone Blanda grew from corms so deadheading wouldn't work. Mine are small white corms which produce one flower shoot and a few strap like leaves.

There are several different varieties. All references I've checked refer to these as rhizomes or tubers.

Right, let's have a bit of fact checking clarity here - too much fake news and misinformation in the world generally these days.

Anemone BLANDA is most definitely a corm, and deadheading won't make any difference - they won't produce another flower the same year just because you've removed a faded one. Proof of its being a corm is here, if someone wants it

http://www.amateurgardening.com/how-to/grow/how-to-grow-wood-anemones-3450

Anemone NEMOROSA, on the other hand, is a rhizome.

The link given to a Growsonyou question on deadheading anemone, given it was posted in August and not spring, most likely refers to Anemone JAPONICA or one of its varieties - it's an herbaceous perennial, and that you do deadhead.

Anemone is a large group of plants, and depending on the variety, may have rhizomes, corms, or roots, which is presumably why this confusion has arisen, but the question was regarding Anemone BLANDA specifically.

well just to throw more confusion into the mix. My RHS book say its a tuber, but the RHS website pages say its a rhizomatous perennial and the RHS bulb book that I have says it is a corm. It certainly has the dissected appearance of a corm.

Either way once it has flowered it does not repeat flower.

ha ha Seaburngirl - yep, my RHS encyclopedia refers to A. blanda as a rhizome, but the RHS Gardening Year (ancient copy) refers to it as a corm, as does my Reader's Digest Encyclopedia and my Bulb book. Bloomin' heck, even the RHS isn't totally clear, although to be fair, I have noticed the RHS 'modernisation' effort appears to mean being less exact, particularly on line.. But when I planted some last year, the packet described them as corms! And they do look like corms... I wonder what Kew calls them...

...and another reference calls it a bulb.

Thank you Bamboo I was sure I'd never said that you could deadhead Anemone Blanda! I still think of it as a corm and it certainly looks like one :) But corm or 'bulb' makes no difference.

botanically it isn't a bulb. A bulb is a series of compressed 'scale' leaves. all bulbs have the structure of an onion.

Sadly the general gardening community calls most corms/tubers etc bulbs so the general public have an idea how to grow them. So confusing.

I agree the online bit is poor. they have several entries for different varieties of A blanda and one says tuber another rhizome. so as they are the same species ......

Thank you Seaburngirl. Also terms in the USA don't always carry over to the UK.

Agree SBG calling everything a 'bulb' is just plain daft, obvious when looking at A blanda that it isn't a bulb, but it makes life easy for the GC's

The point is though how can you get them to flower in April rather than now? If they are in the ground I don't think you can - mine always bloom at the same time as Magnolia stellata, whenever the weather is right.
If you want little blue anemones later you could try the lovely blue wood anemones , Anemone nemorosa-there are several varieties. They prefer a shadier woodsy spot really though. Or you might be lucky with Chinodoxias if you can find the blue ones rather than a mixture.

That's what I have - Chinodoxias. They always bloom 1st week of April.

Chionodoxa are already out here in London I'm afraid, saw them three days ago....

No need to be afraid, London is always a few weeks ahead on NY.

Interestingly my pink ones are out now but the blue ones are always later for some reason.(Thanks Bamboo - been spelling it wrongly all these years...lol)

My comment was really directed at Steragram because she'd suggested those...

That's OK with me Stera. There is a wicked Nor'easter barreling straight towards me and gaining strength as it gets closer. When all is said and done, at least I'll still have Chionodoxa to look forward to.

Glad that's sorted then!