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Can I say,

(a) It also bloom out sweet smell.

(b) The rose started to have some bloom and sweet smell.

(c) The rose plant also had a sweet smell. She likes to smell it every day.

(d) She was happy when she saw her plant had grown up.

(e) The rose plant smells sweetly / well. She likes the smell very much.

(f) After a few weeks, the flowers have / had a sweet smell. She was happy to see that.

(g) She hoped that the rose plant would / will grow faster.
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(a) It also bloom out sweet smell. -- No meaning; I don't know how to fix it. Your English is getting worse, Vincent.

(b) The rose started to bloom and smell sweet.

(c) The rose also has a sweet smell. She likes to smell it every day.

(d) She was happy when she saw her plant had grown.

(e) The rose smells sweet. She likes the smell very much.

(f) After a few weeks, the flowers had a sweet smell. .-- smells cannot be seen.

(g) She hoped that the rose plant would grow faster.
Comments  
(a) It also bloom out sweet smell. -- No meaning; I don't know how to fix it. Your English is getting worse, Vincent.

(b) The rose started to bloom and smell sweet.

(c) The rose also has a sweet smell. She likes to smell it every day.

(d) She was happy when she saw her plant had grown.

(e) The rose smells sweet. She likes the smell very much.

(f) After a few weeks, the flowers had a sweet smell. .-- smells cannot be seen.

(g) She hoped that the rose bush would grow faster.