These 4 species (Spotted Reptans, Citrus Reptans, Spotted Ball Cactus, Citrus Ball Cactus) cannot be created from any of the plants that you can breed from the seeds that you start the game with. In other words, if you don't already have, for example, a Spotted Reptans, you can't create one by breeding other species.

If you need any of these species and don't have them, the best chance to get one is to buy common seeds from the Supply Shop. You can get them by using Mutation Liquid on other plants, but that's expensive and requires luck.

The Citrus species can be bred once you can afford the Extinct Seeds from the Supply Shop, but (again) that's a very expensive option and also requires luck in getting the right seeds.

The same is true for the Ball Cactus species. They can be bred once you can afford the Extinct Seeds from the Supply Shop.

now that I think about it and refer back to my original game notes(deleted from frustration). I believe thats the part of the genectic code that I trashed the seeds for. I had citrus species as one of the original seeds. When my trays began to fill, I trashed those seeds because I didn't think they were stunning. I regret that in the end. But, I started over and now I have Borgs VST. About 700 hours into my second game and have started two others. With all my research and the VST. I'm eagerly looking forward to new frontiers in Plant Tycoon. I want to find all the species. Maybe create one if thats possible.

One time I got really mad cuz I was x-pollinating like tier 3 and 4 flowers to try to get rare species, and what do I end up with? Citrus. SOO annoying.

I remember now, it was Aureus and Tahitian. So annoying to end up with a tier 1 from a tier 3 and a tier 4

how about tilia and baccatus. baccatus someti,es ican make but havent had any luck with tilia

Tilia can only be obtained by mutation or purchasing extinct seeds from the supply shop.

For a citrus reptans are there two plants I have to cross to get this??? I know I have to wait to get citrus varieties by purchasing them, but I would like to know which ones to watch out for? Thanks

MAJOR SPOILERS HIGHLIGHT THE FOLLOWING BLANK SPACE TO READ

How to make Citrus:
Mela + Citrus
Citrus + Citrus
Venomous + Arthurium
Fabled + Tilia
Tilia + Fragrant
Baccats + Fragrant
Blazing + Baccatus
Lilia + Blazing
Fourpetal + Lilia
Tahitian + Fourpetal
Aureus + Tahitian
Venus + Aureus
Venomous + Venus
Mela + Arthurium

How to make reptans:
Mutate scandens and you have a 1/4 chance of getting reptans.

END SPOILERS

Thank you to everyone who contributed to this thread!
I just started the game and was very confused about making plants. lol
I am so LOVING this game!
I can't wait for the next new one of it. :-)