Hello Everyone!! This is My first post.
This is my second year growing figs. I want to use all Organic fertilizer. Just seeing what people are using for fertilizers?!  So far, I've been using Neptunes harvest fish & seaweed.
spraying once a week. (feeding weakly-weekly.)      
                                                                   Thank You,Henry.

Henry, 
I'm assuming you are growing your trees in pots if you are in NH? I grow trees in pots and in the ground in Boston and have had trees for about 7 years now. 
If you are growing in pots, you want to give your plants a low nitrogen fertilizer. Nitrogen makes trees grow a lot of foliage. If you're growing in pots, however, the plant only has a limited capacity to grow roots to support such growth. If you limit the amount of green growth, you will have more successful harvests. After a green shoot puts out 5-6 leaves I like to pinch the growth tip at the end to prevent any more leaves from developing on that shoot. The figs start to appear shortly after pinching.  

You probably already know how to read the fertilizer numbers, but just in case you aren't sure: The 3 numbers on both synthetic and organic fertilizers respectively correlate to Nitrogen-Phosphorus-Potassium (N-P-K). I like to give my trees Bone Meal. I think its 0-10-0. The phosphorus helps with root and fruit development. Seaweed based products have good amounts of Potassium, which helps for disease, but figs don't really have too many disease problems. You can give them wood ash and a little lime if you want to maintain the pH but add more potassium too. If the leaves start to get a little yellow, you can use an iron supplement. Most importantly, keep potted trees well watered. I'm not exactly sure how the sea products line up with phosphorus, but I think that it's probably the most important of the 3 major elements for potted trees. 

If you are growing the trees in the ground you don't need to be as contentious about the types of fertilizers you are using. 

FigTrees2013, thank you! Yes, I'm growing in pots only!
Neptunes harvest fish & Seaweed is 2-3-1. I've Mixing small amount with a gallon of water & using as a foliage feed. I have bone meal & Garden lime. I might try that out also! The bone meal I have says 6-8-0.
I really appreciate the info! , Henry!

I use Espoma Plant Tone. NH is looking pretty good. Might try that.

Chome360, Thankyou! I've been looking @ Espoma Plant tone. I might pick some up.. This week in NH, we're finally gonna have 70's weather, all week!

Organic, "Espoma, Iron-Tone" 2X per growing season (follow directions) supplemented with very diluted "Miracle-Grow All-Purpose Plant Food" (24-8-16) with each watering. Dilute the MG 1-tbs/5 gallons water.  Add a top dressing of some granulated limestone if you soil is too acidic....i.e. loaded with peat moss.  All plant "foods" will eventually break down into their chemical components.

Every fig grower will have their own favorite fertilizers.

Frank

I just started using neptunes seaweed and alaska fish emulsion (alaska not organic anymore) this year. Have you had luck with the stuff so far henry?

Henry , 
I'm also in NH and growing organically.
I've been using mainly Pro Gro 5-3-4 ,  http://www.norganics.com/products/fertilizers/progro.html
and Lobster compost from Coast of Maine , http://coastofmaine.com/blog/?tag=lobster-compost
The Espoma Plant tone is similar to the Pro Gro and would be a fine choice too.
I've found good luck adding Azomite and greensand as well to my potting mix for container figs.
Best ,
Kerry

Thanx Frank!, for the Great tips!
Indestructible87, so far the plants look great!
I've gotten some great tips here, I think I might try different fertilizers on separate trees & see how it works out!
I really Appreciate everyone's time!! Henry.

Kerry, Thanx For the great info! I really Appreciate it!!
I hope the weather stays on the warm side. It's been a rough winter!!

Henry, I gave all of my flowers and a few fruiting plants the fish and seaweed as well as my potted figs this season, all of my flowers look great, my hydrangeas are taking off as well. I don't care too much for flowers though. The figs look about the same as they did before though.

Blood meal, bone meal, potassium sulfate (you can buy mined potassium sulfate but is more expensive)  Fish fertilizer and foliar feed with the fish fertilizer and lactobacillus.  Three applications of the first three ingredients, first in april for me before bud break with top dress of composted manure, 7-3-7 at a heavier rate, then half may 6-3-10 and last is start july of 6-3-10.  Feed once a week with fish fertilizer when about 3 leaves until half july or start of august depending how hot it is outside and how much water I need to use.  More potassium and less nitrogen together will promote for figs to form.

Of all the 'tones', I like the tomato for its extra calcium.  I also use worm castings and composted cow manure.

I use fish fert. and MG.  I have a garbage can full of wood ashes and a couple of days ago I sprinkled some on top of the soil in an about a 4  gal. container with one of my special figs from NYC.  The leaves that are pushing up around the base of the cutting look very happy.  So today I put some on the other pot.  If anyone thinks this is bad, please speak up.  I only know what I'm seeing with the plants.  I also grind up dried egg shells in a used blender that I bought from St. Viny's.  I spread that around too.