What other kind of hybrids are hard to breed?

[Cascade]

Except for blue roses and Purple pansies.

.For me its Black cosmos x.x I TT`d 1 month now and still nothing xD

 

[olivetree123]

Pink lilies are stubborn little #($(*@($s for me. >:

 

[tealseer]

Purple tulips and black cosmos as well but yo:

It took me MONTHS to grow a pink lily why are they so hard to grow they're just red and white!!??

 

[BungoTheElf]

Black cosmos are so easy for me omg but I use blackcosmosxblackcosmos :d

I think orange tulips and pink lilies hate me.

 

[Lurrdoc]

Anything pink hates me. I can never grow pink roses, pink tulips or pink lilies as fast as I can grow pink cosmos which is the only exception. Oh and orange pansies. God, I hate breeding those. I kept getting yellow and red pansy spawns.

 

[Moonberrycat]

Black cosmos are so easy for me omg but I use blackcosmosxblackcosmos :d

I think orange tulips and pink lilies hate me.

I have a couple pink lilies lying around. I could give you them if you'd like. c:
(By a couple, I mean like, three XD)

 

[tealseer]

Pink cosmos are like the sea basses of hybrids.

 

[Bradski]

Pink flowers in my opinion are the most difficult since pinkXpink doesnt work you need like red and white or something.