Is my magic thallid green deck good

Question

im building a straight forward thallid deck please help and rate this moldy but fun deck.

creatures 24

3 thallid

3 sporesower thallid

3 sporoloth ancient

3 thallid germinator

3 thallid shell dweller

3 thelon of havenwood

3 llanowar elves/utopia mycon

3 thelonite hermit

spells 12

4 doubling season

2 overrun/stampede

2 harmonize/overgrowth

2 fungal bloom

2 verdant embrace

land 24

1 pendelhaven

23 forest

Answer 1

I myself would add a few Wall of Blossoms (1G, 0/4 Wall, when it comes into play, draw a card).  It is a good card that allows you to build defences and lets you draw some important Thallids.  On the same note, you might want to add some more Thallids.  They are good small cards and you want as many out as you can get.  Another card I might look at for a sideboard card would be Worldly Tutor (G, Instant, Search your deck for a creature and place it on top of your deck).  

My final suggestion is to, if you want, take out a Pendelhaven with a Harmonize.  There is no doubt that by the end of the 4th or 5th turn, you'll be out of a hand.  In order to keep the attack going, you'll want to get a Harmonize to get another Thallid and likely another Doubling Season.

Answer 2

You could add in Gaea's Anthem.  Gives your creatures +1/+1.

Psychotrope Thallid will help with card advantage.  Make a saproling block, pay 1, draw a card.  This is probably better than the germinator.

Otherwise, it's pretty solid.  I would say 7/10.