Spruce Pine
A North Florida pine that grows in shade, and I am planting it further south than the books say
Pinus glabra


Why it works here
Let me be honest about this one before anything else, because it is the plant on this site where my own experience and the published range disagree the most. Spruce pine is a Florida native, but its home is the Panhandle and the north end of the peninsula, in cool moist ravines and bottomland hardwood forests. Not sand. Not Stuart. No source I can find documents it growing in zone 10a, and the nearest grower is in Alachua. I have planted it here anyway, and so far it is growing. Why? Because it does something no other pine does: it grows in shade, under an existing canopy, with soft short glossy needles and bark that looks more like an oak than a pine. It is a different texture than slash pine and it fits a woodland garden in a way slash pine never will. Birds and squirrels eat the seed. So the deal is this. If you want one, you are running an experiment with me, and I will say so on the plan. If you want a pine that is guaranteed to belong here, that is slash pine, and it is elsewhere on this site.
Care
Give it moist, acidic soil with organic matter, part shade, and mulch, which is the opposite of what you would do for a slash pine. Water through establishment and in long droughts. Keep it well away from anything salty. It is slow. Do not expect a tree for years.
Common problems
Range. It is a North Florida tree and the summers, the sand, and the alkaline fill here are all against it. I am watching mine. I will not promise you what I have not seen.
Wind. UF's hurricane research put spruce pine at the bottom of the southern pines, with about 38 percent survival after Ivan. That is a brittle tree. Never plant it where it can fall on the house.
Pests when planted out of range. The forestry literature specifically mentions gall mites and tip moths on trees planted outside their native range. That is us.
Fire. Thin bark, no fire tolerance. Not a plant for a prescribed burn property.
Common questions
Why would you plant a North Florida tree in Stuart?
Because it is the only pine that grows in shade, and because I wanted to know. I am telling you the range and the risk so you can decide with your eyes open. That is the whole job.
Should I plant this or a slash pine?
Slash pine, unless you have a specific shaded woodland spot and you like the experiment. Slash pine is the local native, it takes wind, it takes fire, and it takes sand.
How big does it get?
In an open yard, 30 to 50 ft over a long time. In its native forest, 100. Plan for the yard number and keep it away from the roof either way, because of the wood.
Interested in a spruce pine in your landscape?
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