dahlia society of australiaNSW and ACT dahlias

 

 

Dahlia Society of Australia - Judging Standards

 

1. Formal Decorative Dahlias

Bloom should be fully double. The centre should be closed and should be as high as the surrounding face florets. Florets should radiate evenly from the centre without gaps, should be broad, smooth and being neither markedly involute nor revolute, gently recurving towards the stem, The tips of the florets should be preferably be rounded. Depth of the bloom should be at least two thirds, but not more than its diameter.

 

2. Informal Decorative Dahlia

Bloom should be fully double. Centre should be as high as the surrounding face florets of the bloom.
Florets should radiate evenly from the centre without gaps to be broad, slightly twisted or wavy mature florets giving the effect of not being flat. The tips of the florets should be revolute for not more than one quarter the length of the floret and should re-curve towards the stem. Depth of the bloom should be at least two thirds, but not more than its diameter.

 

3. Semi-Decorative Dahlia

Blooms should be fully double, Centre should be as high as the surrounding face florets of the bloom.
Florets should radiate evenly from the centre without gaps, should be fully involute for more than one third but less than one half of their length. The tips of the florets should preferably appear to be pointed and should re-curve towards the stem. Depth of the bloom should be at least two thirds, but not more than its diameter.

 

4. Semi Cactus Dahlia

Bloom should be fully double. Centre should be cone shape and as high as the face florets.
Florets should radiate evenly from the centre without uneven gaps between rows, breaking gradually with flat pointed immature florets to outer florets. Outer florets should be broad and flat towards the base, revolute with edges overlapping from the tip for more than one quarter, but not more than half their length, with the tips pointed. Florets may be gently incurved or straight. Depth should be at least two thirds, but not more than its diameter. There should be sufficient florets to prevent gaps in formation and outline.

 

5. Cactus Dahlia

Bloom should be fully double. Centre should be cone shape and as high as the face florets.
Florets should radiate evenly from the centre without uneven gaps between the rows, with immature florets to outer florets. Outer florets should be narrower than Semi Cactus but in proportion to the size of the bloom, revolute edges should overlap from the tip for at least half and preferably two thirds of their length with tips pointed. Florets may be gently incurved or straight. Depth should be at least two thirds but not more than its diameter. There should be sufficient florets to prevent gaps in formation and outline.

 

6. Exhibition Cactus Dahlia

Bloom should be fully double. Centre should be cone shaped and as high as the face florets.
Florets should radiate evenly from the centre without uneven gaps between the rows to outer florets.
Florets should all be very narrow, long and pointed with revolute edges overlapping for as near as possible to their length giving a tube effect, rather than a flattened appearance. Towards the tips the florets should be strongly incurved and may regularly curve one way. Depth should be at least half but not

 

7. Fimbriated Cactus Dahlia

General requirements should match the Cactus or Semi Cactus Dahlia. Fimbriation or splits should divide into two or more points giving a splayed effect. The fimbriation of splits should be in proportion to the size of the bloom. ie the fimbriation in miniature blooms should be at least 10mm from the tips. Centre will give a slightly brush effect as florets open, but should still be closed, as high as the surrounding face florets and as cone shaped as possible.

 

8. Fimbriated Dahlias other Types

Fimbriated Dahlias should match the Standard for their type. As a guide, the fimbriation in miniature blooms should be at least 10mm from the tips.

 

9. Ball Dahlia

Blooms should be fully double and spherical like a ball. Centre should be as high as the surrounding face florets. Florets should be uniform in size and formation throughout the bloom, involute for most of their length and fully involute, to the extent of edges touching (forming tubes) for at least half their length. Tips should appear to be rounded or blunt. Florets should be compactly arranged without gaps between rows. Florets on the back half of the bloom should not flatten completely, still maintaining the tube effect of involute florets. Back florets should reflex fully to the stem.

 

10.Pompon Dahlia

Bloom should be fully double, symmetrical and spherical like a golf ball Centre should be closed, fully developed and as high as the surrounding face florets. Florets should be uniform in size throughout the bloom. All florets should be involute for the whole of their length, regularly arranged and the tips of the florets should appear to be rounded. Back florets of the bloom should reflex to the stem.

 

11. Waterlily Dahlia

Bloom should be fully double, and symmetrical. Side view should be saucer shaped and face view should be circular in outline and regular in arrangement. The centre should be closed and dome shaped, breaking gradually to fully developed outer florets. The layers of florets should be openly spaced, with four to seven rows, to give a delicate and light appearance. Outer florets should be broad and slightly cupped with rounded tips.

 

12. Collerette

Bloom side view should be flat. Centre should be open, disc shaped, with fresh pollen bearing stamens. Outer florets should be equal in size and shape, broad flat and rounded at the tips. Outer florets should radiate regularly and evenly away from the central disc and should overlap to avoid gaps. The outer florets shall be eight.
The inner row of florets should form a collar evenly around the central disc, of wavy florets with multiple divisions and preferably not exceed half the length of the outer florets. The colour of collar should preferably contrast greatly with outer florets.

 

13. Single Dahlia

Bloom side view should be flat. Centre should be open, disc shaped with fresh pollen bearing stamens. Surrounding the centre should be a single row of flat equally sized and shaped florets that may overlap but should not assume double formation. Tips should be rounded. Florets should radiate evenly away from the central disc and must number eight.

 

14.Anemone Dahlia

Bloom should be fully double. Side view of the centre should be dome shaped., made up of elongated tubular florets, compacted tightly, so that the central disc does not show. Outer florets should preferably form one row of evenly sized flat, broad florets with rounded tips, regularly arranged around the centre florets.

 

15. Orchid Dahlia

Bloom side view should be flat. Center should be open, disc shaped with fresh pollen bearing stamens. Surrounding the center there should be a single row of eight involute florets that preferably show a different colour or shade on the reverse side. Florets should be involute for their whole length and fully involute with edges overlapping for at least half their length.

 

16. Stellar Dahlia

Bloom should be fully double. Center should be closed and as high as the surrounding face florets, breaking gradually with immature florets to fully developed outer florets. Outer florets should be narrow and involute, and preferably be a contrasting colour or shade on the reverse side. Depth should be at least half but no more than two thirds of its Diameter.

 

17. Peony Dahlia

Bloom should be flat. Centre should be open, disc shaped with fresh pollen bearing stamens. Surrounding the centre should be two to four rows of ray florets. Florets adjacent to the disc flower may be smaller, twisted or curled.

 

18. Miscellaneous Dahlia

There are other types of dahlia which at present have no officially recognized standards for judging.
Some show schedules have items for these types of dahlia, and it is up to the judges to use their knowledge and experience in judging these types.