Now I am not sure when or if it was changed but the skill used to last 8 seconds on a rank 6 sunspear title. I used it today with a "wtf" when I saw it was on for a meagre 3 second duration. Here is how the duration scales (source GWW).
Sunspear rank 0 1 2 3 4 5 6 7 8 9 10
Duration 1 1 2 2 3 3 3 4 4 4 5
Although stated that rank 6 gives 4 second duration, this is not true, it actually lasts 3 seconds. Now seriously, first of all its a PVE only skill, secondly costing 10 energy with a recharge of 25 and at rank 6 a duration of 3 why the hell even bother with this skill? It used to be somewhat useful now I wonder why ANET designers even bother with creating skills that in the end are worthless.
Note: apoligies didn't realise a thread is already discussing this http://www.guildwarsguru.com/forum/s...php?t=10192541
Seed of Life -worthless or worthwile?
Ecomancer