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Bulb Sizes

SingySingy Posts: 206


I am ordering some tulip bulbs for delivery at the end of summer and noticed there are different sized bulbs, i have had a look around and i cannot find any bulb size charts.

Is it a universal sizing chart that everyone uses or do the sizes numbers represent a circumference, diameter etc?

Thanks in advance.



  • fidgetbonesfidgetbones Posts: 16,671

    Bulb size refers to circumference at widest point.

    If you think of the growth point as the head, the circumference is the waist of a teletubby.

  • fidgetbonesfidgetbones Posts: 16,671

    Bigger bulbs equals more/bigger flowersimage

  • BobTheGardenerBobTheGardener Posts: 11,391

    Yep, but it's difficult to estimate in easy terms how big a bulb is from it's circumference, so, to get the diameter (also in cm), divide by Pi (roughly 3) so a size 12 bulb is about 4cm diameter. image

    I'm sure they quote the circumference just so the number looks as big as possible - surprised they don't use millimeters!image

    A trowel in the hand is worth a thousand lost under a bush.
  • FairygirlFairygirl Posts: 52,064

    Good tip Bob - as always!

     Fidget have you started early on the vino-are you trying to grow tinky winky now??image

    It's a place where beautiful isn't enough of a word....

    I live in west central Scotland - not where that photo is...
  • SingySingy Posts: 206

    Ok thanks,the Tulips i have ordered are all 10-11, 11-12 and 12, alliums are 14-16.

    Assume that is acceptable?

  • fidgetbonesfidgetbones Posts: 16,671

    Sorry, had some very funny measurements for a below knee stocking last week. I would have fitted a doll.

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