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GrowFAQ : Sexing

What are preflowers?

Added by:
Bongaloid  Last edited by:
MedMan  Viewed: 500 times

Rated by 32 users:
9.12/10

Preflowers, as opposed to full blown
flowers, generally appear after the fourth week of
vegetative growth from seed. Check carefully
above the fourth node. Please note that preflowers are
very small and and almost impossible to differentiate
without magnification. A photographer's 10x loupe is
handy indeed when examining preflowers.

As the
images below demonstrate, the female preflower is pear
shaped and produces a pair of pistils. Frequently, the
female preflowers do not show pistils until well after
the preflowers have emerged. Thus, don't yank a plant
because it has no pistils. Pistillate preflowers are
located at the node between the stipule and emerging
branch.

Also, some female preflowers never
produce pistils. A female preflower without pistils is
difficult to distinguish from a male preflower. Thus,
hermaphodite issues should not be resolved by the
appearance of preflowers, without pistils, on a plant
otherwise believed to be a female.

Female
(pistillate)

Image courtesy of MrIto

Female
(pistillate)

Image courtesy of Uncle Ben

The
male preflower may be described as a "ball on a stick."
However, its most recognizable feature is its absence of
pistils. Sometimes, a male plant will develop mature
staminate flowers after prolonged periods of vegetative
growth. These appear in clusters around the nodes.

The following image shows a male plant in early
flowering. Staminate flowers are located at the node
between the stipule and emerging branch.

Male
(staminate)

Image courtesy of PLAYn

Image courtesy of PsycoXul

Last modified: 08:22 - Jun 24,
2001

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faq:1037 "What are
preflowers?"