The most common and most likely answer to this crossword clue is the 7 letter word JUNIPER
I've seen this crossword clue in Financial Times
J
U
N
I
P
E
R
More clues leading to the result JUNIPER
- Evergreen youth takes exercise for nothing
- Bush minor loses love for exercise
- Month one gets a shrub
- Plant, one pruned primarily within particular month, right?
- During a month I start planting right kind of shrub
- Environmentalist revealing evergreen shrub
- Shrub producing berries, strangely unripe after first of July
Buddy explains!

The straight part
We know that "Environmentalist/evergreen shrub" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case environmentalist/evergreen shrub = juniper.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does JUNIPER mean?
JUNIPER noun- Any shrub or tree of the genus Juniperus of the cypress family, which is characterized by pointed, needle-like leaves and aromatic berry-like cones.
- One of a number of coniferous trees which resemble junipers.
- Gin.