Sorry but i can't update my mods anymore.
Most of my mods have a very unrestrictive license so feel free to take over...

Every tree drops 1 seed of his own species.
You can plant it and when it's grown up, it gets marked for deconstruction and replanted automatically.
By default you can't plant them in desert but you can use landfill or water gun to create farmland anywhere. (see the settings)
For additional difficulty i recommend the mod Bot Servicing , which is 100% compatible with this.

My mods:
Combat:
- Turret Shields
- Laser Tanks
- Laser Rifle
- Railgun Revival
- Shield FX
- Desert Eagle
- Wave Defense Unlimited
- Blood & Gore
- Universal Turret
- DotA
- Glowing Laser Beams
- RPG Items
- Spell Pack

Basing:
- Realistic Reactors
- Realistic Reactors - Utilities
- Overloaded Trains
- Resource Spawning Ingame
- Transformers
- Speaker Signals Expansion
- Solar Panel Equipment
- 0.16 Graphics
- Unlushed Trees
- Bleached Trees
- Copy&Paste for 0.16
- Lua Combinator 2
- Lua Combinator 3
- Fire Department
- Robot Tree Farm
- Modder's Science Pack
- Assembling Machine Equipment
- Bottled Science
- Heat Glow
- Market
- Market - AutoBuy
- Wind Turbines
- Vehicle Physics