I'm gonna post some screenshots of my hybrid plots so everyone can get some ideas on setting up their gardens. Don't flame me, I'm just trying to help. Note: No hybrids were moved while these shots were taken.
<div class='spoiler_toggle'>Roses</div><div class="spoiler" style="display:none;">
Note: Red roses must outnumber yellow roses to receive orange.
Note: You can get blue roses this way, but randomly.You're likely to get more purple and black roses.</div>
<div class='spoiler_toggle'>Pansies</div><div class="spoiler" style="display:none;">
Note: After spawning one blue pansy in this patch, I left it there and it spawned 4 more.
Note: You can get both orange and purple pansies this way.</div>
<div class='spoiler_toggle'>Cosmos</div><div class="spoiler" style="display:none;">
Note: This is a great way to achieve all the hybrid cosmos. Make sure no yellow or white cosmos are touching each other, just like in the picture. On your right is a pattern of red and white roses that can spawn either, purple, pink or black roses.
Note: Another example of crossbreeding hybrids and parents. In this case, pink and red cosmos.</div>
<div class='spoiler_toggle'>Tulips</div><div class="spoiler" style="display:none;">
Note: You probably literally get the picture by now. Crossbreeding pink hybrids with red parents will spawn more hybrids.
Note: By using a combination such as this one, you can spawn all 3 hybrid colors from a single patch. Yellow tulips are the only yellow flowers that can be touching, as they produce black tulips..</div>
I hope my pictures helped you in your quest for hybrids. If you still have any questions, please let me know.