Mog Garden: Have rank 6 key item but garden furrow still rank 5

[Pheonixistari]

Platform: Windows
ISP: Cox Communications
Type of Internet Connection: Cable
Internet Connection Speed: 50Mbps
Date & Time: Feb. 8, 2015 13:45 MST
Frequency: Once (can not reproduce due to nature of key items)
Character Name: Pheonixistari
Race: HumeM
World: Phoenix
Main Job: Thief, Lv.99
Support Job: Dancer
Area and Coordinates: Mog Garden
Party or Solo: Solo
NPC Name: Garden Furrow
Monster Name: n/a
Steps:
I bought the key item "Arboreal Abracadabra" for 80,000 gil for rank 5 furrows in the Mog garden from the skipper moogle in port windurst. Upon going back into my garden i noticed i did not have 3 furrow rows. I thought maybe the wikipedia article on mog gardens was wrong and continued to use the garden as normal. Upon using the furrows enough to purchase the rank 6 key item i went to the skipper moogle in port windurst and bought the key item "Verdant and Verdon'ts" for 80,000 gil for rank 6 furrows in the mog garden. I thought the price change was strange for buying a rank 6 key item. After returning to my mog garden i noticed i do now have 3 rows of furrows but the game also tells me that my furrow is only rank 5 even though i posses the permanent key item "Verdant and Verdon'ts".

EDIT: It says I can't post a reply so I have to edit in a response here. It seems Love Mango is correct and that I got confused with the Furrows and the Grove. Please close this topic and no need to investigate further as this is not a bug more my own confusion.