CURATOR COMMENT
-Leave the ATK|HP section of the table blank if the card is not a creature (For Overgrowth | Jungle). "N/A" is inappropriate, as the letters can technically denote stats (See 'Scarab')
Personally, I think that the initial cost should be cheaper, and the CUMULATIVE absorption should be dramatically increased to 3 
per turn. This way, it sort of follows the concept of Flooding in that it requires a notable amount of quanta to work right, but when it does, it produces a lot of flora that can devastate the opponent.
The Trees' passive growth effect is cute, but I'm assuming that they start out weak because of this, correct? If that's the case, you should probably make their HP higher while giving them 0 attack - this way, they're more resistant towards CC effects, but are poor damage dealers unless they're left untouched over time.
Just my suggestions, of course. ^^;
ATK|HP fixed
The difference between Absorb per turn (flooding) and Cumulative Absorb per turn (Overgrowth) is:
At Turn T
Absorb X per turn absorbs X quanta
Cumulative Absorb Y per turn absorbs YT quanta
Total from turn 1 to turn T
Absorb X per turn absorbed XT quanta
Cumulative Absorb Y per turn absorbs Y(T^2-T)/2 quanta
Example
At Turn 6
Absorb 3 per turn absorbs 3 quanta
Cumulative Absorb 1 per turn absorbs 6 quanta
Total from turn 1 to turn 6
Absorb 3 per turn absorbed 18 quanta
Cumulative Absorb 1 per turn absorbed 21 quanta
Cumulative Absorb requires more quanta in the long run than Absorb and will eventually drain all the quanta of that type.
Making the trees more CC resistant sounds like a good idea.
My thoughts and recalculations for cost benefit analysis check here but beware it involves tetrahedral numbers.
0|3 and 0|5 stats means at turn T for 5+(T^2-T)/2
the Trees will deal a total of (T^3-3T^2+2T)/6 damage or (T^2-3T+2)/6 average damage per turn.
This is an unacceptable cost/benefit ratio (At turn 60 it has not even dropped below 3/1)
1|3 and 1|5 stats means at turn T for 5+(T^2-T)/2
the Trees will deal a total of (T^3-T)/6 damage or (T^2-1)/6 average damage per turn. (At turn 60 Cost/Benefit=2.9)
2|3 and 2|5 stats means at turn T(T>1) 5+(T^2-T)/2
the Trees will deal a total of (T^3+3T^2+2T)/6 damage or (T^2+3T-2)/6 average damage per turn. (At turn 60 Cost/Benefit=2.8)
Wow I have seriously underpowered this card. Back to the drawing board. 3 Trees per turn? That would triple its effect but make it useless after 7 turns.
| Turn | Quanta Used/Absorbed | Trees | Total base damage | Total growth damage | Average base damage per turn | Average growth damage per turn | Average damage per turn if B=1 | Average damage per turn if B=1/Quanta used/Absorbed |
| 1 | 5 | 3 | 0 | 0 | 0 | 0 | 0 | 0/5=0.00 |
| 2 | 6 | 6 | 3B | 0 | 3B/2 | 0 | 3/2 | 3/12=0.25 |
| 3 | 8 | 9 | 9B | 3 | 3B | 1 | 4 | 4/8=0.50 |
| 4 | 11 | 12 | 18B | 12 | 9B/2 | 3 | 15/2 | 15/22=0.68 |
| 5 | 15 | 15 | 30B | 30 | 6B | 6 | 12 | 12/15=0.80 |
| 6 | 20 | 18 | 45B | 60 | 15B/2 | 10 | 35/2 | 35/40=0.88 |
| 7 | 26 | 21 | 63B | 105 | 9B | 15 | 24 | 24/26=0.92 |
Notes for table
Quanta used does not count quanta that would be absorbed that turn. It only includes quanta absorbed on previous turns and the initial casting cost.
With this change it would give life an uncontrollable force (with the exception of 2 Plagues, Plague and Otyugh, PC and Plague and attempts in a similar vein) that filled the board with creatures (great synergy with Feral Bond) but is less quanta efficient than a skeleton and continues to consume more and more quanta until there is none left.
