Because the roses are a special harvestable node, Bountiful Harvest can increase your number of roses gathered. Clear-cutting other harvesting nodes in the area may also help spawn more roses.
Bestowing roses on at least 25 different people will also earn the title "The Flirtatious". At 100 roses, all to unique people, you get the title "The Romantic". At 250 roses, all to different people, you get the title "The Passionate". At 500 roses, you get the title "The Amorous". At 1000 roses, you get the title "The Heartbreaker". As of 2011, the quest My Romantic Reputation now helps you keep track of how many roses you've distributed.
The timer marking players as those that already received a rose resets after an hour. Not only can you give them another one after an hour, but you will also receive credit for doing so. (Source: Kaitheel).
This article refers to events, personae, items and activities only present in-game during the annual Erollisi Day festivities, which come to Norrath each year for a short time roughly around February 14th.