Q.Pine Tree, Evergreen Trees
Would you please let me know:
1. How can I increase the number of my pine trees, not by seeding but by using their own stems or roots?
2. How can I increase the number of Geraniums?
Thanks a lot.

Pine trees are very difficult or impossible to propagate from cuttings but you can give it a shot. Here is an article that will be helpful:
https://www.gardeningknowhow.com/ornamental/trees/tgen/how-to-root-cuttings-from-various-shrubs-bushes-and-trees.htm
Geraniums, on the other hand, root easily from cuttings. Information on how to propagate from cuttings can be found here:
https://www.gardeningknowhow.com/houseplants/hpgen/using-cuttings-and-leaf-cuttings-to-propagate-your-houseplants.htm