I'm trying to attract a topiary Turtle and unicorn to my garden. for some reason none are appearing.. How come? and Please Help

You'll need a "ready for harvest" fructus randomus for the tortoise to trim your topiary.  Unfortunately, fully dusted, it takes 1.5 days and won't be ready in time for the trim.  You'll have to harvest an incomplete orange trail and try again.

As for the red trail, the Pink Cap also has to be "ready for harvest" before it will attract the unicorn.  Yours still has 1 day, 14 hours before it will start attracting, so it won't be ready in time either.  You might want to rip it out and plant an enchanted pink mushroom.  If you dust it to "fully grown", you have a chance to attract the unicorn with all the other myths.   

Thank you very much for your help..

Willow - 2 high tables will cut out 2 of the mice increasing your chances of a Uni visit but otherwise it's a waiting game & hope it gets spotted when it does visit.

https://myarduinoprojects.com/flcalculator

... and my top tip, for what it's worth, is ...

Plant up all the plants which need to be R4H and dust and grow them to R4H BEFORE you plant your topiary seed in the very first of your new level.

That way, you are always ready if Tortoise is your first, at level orange, for example. Before doing Violet, i will be planting six different plants, including Ventus for Leopard, and dusting and growing them to R4H, is another example. Yes, i may have to pull some of them and plan their replanting ... But so much better to be prepared!

Good luck x

I preferred to plant the topiary seed and dust up to see what the first critter is. One has five days to get any plant ready for harvest and get the trim and find the topiaries required...which is more than enough time for most of the critters(there are exceptions). If it is something like the leopard...just rip out the seed(this can be easily done without contacting Support)...and plant for it and then plant the bush later and let it grow naturally to save gems. If you have gotten to the violet trail, chances are you have many seeds that could be tossed without much impact. As well, keep your garden as pure as you can because with other critters eating the same food, it can slow down trims and in attracting the topiary once the bush is trimmed. Doing too much all at once can cause trails to fail. While not necessary, the rainbow rocks are a wonderful tool and less planning needs to be done.

Thank you all for your help for next time  :)