Frequently Asked Questions
The most-asked questions about conifers & allies.
What exactly are 'conifers & allies'?
It is the informal umbrella term for seed-bearing plants that make cones instead of flowers, grouping true conifers (pines, firs, spruces, cedars) together with their closest relatives: ginkgo, cycads, and gnetophytes. All of them are gymnosperms, meaning their seeds sit exposed on a structure rather than locked inside an ovary.
How many major lineages fall under this group?
Four principal lineages are recognized: Coniferales (roughly 230 true-conifer species), Ginkgoales (a single living species, Ginkgo biloba), Cycadales (about 30 cycad species), and Gnetophyta (around 80 species in three genera). Together they form one of the oldest surviving branches of the seed-plant family tree.
What is the single biggest difference between conifers & allies and flowering plants?
They never produce flowers or true fruits; seeds are borne openly on cone scales, leaf-like bracts, or specialized stalks. That 'naked-seed' strategy predates the enclosed-seed strategy of angiosperms by well over a hundred million years.
Where on Earth do they grow today?
True conifers dominate temperate and boreal forests across the Northern Hemisphere and are also prominent in the Andes and East Asian mountain ranges. Ginkgo is native to a small area in central China, cycads cluster in tropical and subtropical zones worldwide, and gnetophytes appear in scattered pockets from the Himalayas to Australia.
Which species are the most iconic or widely recognized?
The Scots pine, Douglas fir, and Eastern white pine are household names in forestry and Christmas-tree culture, while Ginkgo biloba is the sole survivor of its entire division. Cycads such as the Sago palm and the two-leaved Welwitschia of the Namib Desert round out the group's most famous members.
How old is this group, and what is its evolutionary story?
The earliest conifer-like fossils date to the late Carboniferous, roughly 300 million years ago, and the lineage diversified explosively through the Mesozoic, when it was the dominant land-plant group before flowering plants took over. Ginkgo, cycads, and gnetophytes each represent lineages that were once far more diverse but have been whittled down to a handful of surviving species.
What key identifying features should a beginner look for?
Look for needle-, scale-, or fan-shaped leaves on woody stems, resin canals in the bark, and—most diagnostically—cones or cone-like seed structures at branch tips. Unlike most broadleaf trees, they lack true flowers, petals, or enclosed ovaries.
What ecological roles do conifers & allies play?
Boreal and montane conifer forests are among the planet's largest terrestrial carbon stores and support countless specialist birds, insects, and mammals. Their needle litter creates acidic soils that shape entire understory communities, and their deep root systems stabilize slopes in mountain and coastal regions.
If I want to grow one, what is the simplest starting advice?
Match the species to your hardiness zone and light—Eastern white pine tolerates cold and poor soil, while many cycads and ginkgos prefer well-drained, sunny spots. Avoid overwatering, give the plant room (most are slow but very long-lived), and resist heavy pruning, since most conifers heal poorly from large cuts.
What 'wow' fact makes this group feel especially special?
Ginkgo biloba has looked essentially unchanged for over 200 million years and survived the Cretaceous–Paleogene asteroid impact that wiped out the dinosaurs, earning it the title of living fossil. Welwitschia mirabilis in the Namib Desert grows just two leaves its entire multi-century life, and some bristlecone pines push past 5,000 years old.