HORTICULTURE

Detailed explanation-1: -H and HB’s are generally good for sketching. 4B and 6B’s are preferred for shading. HB and 2HB’s are ideal for writing purposes. B pencils tend to produce more ‘shine’ than H’s.

Detailed explanation-2: -Hard leads are graded in the same way, but use an ‘H’ to show how ‘hard’ they are. A 2H is harder than an H and a 6H is really really hard. HB (hard black) leads are considered to be the happy medium on the graphite scale.