Actually, it's not easy to answer your question. Surely, [らしい], [みたい], [っぽい] are in almost the same meaning. But there are used differently, after all. So I guess you should read this article that try to deal with almost the same problem you have. http://www.jgram.org/pages/viewOne.php?tagE=similar And, just for your information, I just tried to solve your questions. 冬なのに今日は暖かくて春みたいです。 Definitely, we don't say like "暖かくて春らしい" But It can be said like "今日は暖かくて春みたいだ。" 逃げたのは黒っぽい車でした。 If you would like to use "黒みたいな", you can only use it in this case like below. 逃げたのは黒みたいな色をした車でした。 Hope it will be of help to you :)

I'm not sure how much precisely this way of doing it is though, I just tried to translate it into English like below. "The faith is involved with changing of seasons, and then it's been observed from old times." Hope that will be of help to you.

「 にっかり」っていう日本語は無いですよ。何か間違えているのでは無いですか？

我が人生：第一章

ハロー！
留学生として日本に住んでいる大学生でッす！もちろん日本語を勉強してる。後の専攻はコミュニケーションだ。
日本の生活はね、ちょっと大変だけど、楽しくないってわけじゃないよ。
今時間があまりないから、この日記を短くしてみた。
とりあえず、趣味を書いておくね。
テレビゲーム、読書、ダンス、お酒、会話、色々。
じゃ、ヨロシク。

Hi! Good to see you!  どうもこんばんわ :D

Looking at your sentence, I guessed you have already understood some basic grammar concepts of the Japanese language and look like you'd like to write a casual Japanese sentence. So I try to correct your sentence based on it. 

Btw, How about living in Japan? Looks like you get used to life in it, don't you?  If you will continue to write what you felt about it, maybe you find not just some one like me, but also a Japanese who would be comatible with you in this website. 

ではお元気で! Take Care!

 

Regarding "Bio organic fertilizer", That's right. It be also can written in japanese like this: 生物的有機肥料 or バイオオーガニック肥料. And "let's go green" is translated into it like this: 緑化する So the Japanese sentence that you bring here is can be translated like this: 生物的有機肥料を使って緑化していこうね。