Have you ever wondered why you can’t always grow a true-to-name fruit tree from planting seeds? Folks commonly ask if it’s possible to take the seeds from an apple, plant them, and grow trees that yield the same exact type of apples the seeds came from.
Unfortunately, for most fruit trees*, this isn’t quite how it works. To explain, we’ll start by addressing the history contained in seeds and why it’s more reliable to plant and grow grafted fruit trees.
We’ll use apple trees for example here. Most apple trees are not self-fertile. This means they need another different apple tree blooming nearby (at the same time) to pollinate the blossoms that in turn become the fruit.
So, if you had a Honeycrisp apple tree, you would need a variety like a Golden Delicious apple tree to pollinate it. From one tree to the other, the male flowers’ genetic material pollinates the female flowers (often helped by bees, wind, etc.). The end result is fruit development in both mature apple trees.
This cross-pollination is called sexual reproduction in fruit trees. Even if a fruit-tree variety is considered to be self-pollinating, it is still receptive of other pollen — and the seeds of its fruit end up with all the history from past generations of the parent trees. The results of the combined genetic material occur in the seeds, not the fruit. This is why cross-pollination can occur in your fruit tree’s flowers and not affect the color or appearance of that fruit.
The fruit is merely a vessel for the seeds. The seeds are what carry a history of traits from the parent tree and its pollination partner(s).
That’s a lot of potential, but it’s unpredictable. If you were to plant the seed from a Honeycrisp apple, the resulting apple tree and its fruit may display characteristics from anywhere in its lineage. The tree or its fruit may be similar to Honeycrisp or they may be throwbacks from somewhere in the genetic history, but they will not be a true Honeycrisp apple tree or true Honeycrisp apples.
One dependable way to ensure that the desired characteristics are maintained in subsequent fruit trees is through grafting. Grafting involves taking a scion or bud chip cut from the desired parent tree (for example, a Granny Smith apple tree) and literally placing it onto a compatible rootstock. The variety and the rootstock are calloused, or grown together, as the tree heals. All suckers are removed from the rootstock, and the Granny Smith scion is allowed to grow into the new tree, thus maintaining its Granny Smith identity. This process is called “asexual reproduction” (apart from sex). Since only one parent/variety is involved in this process, the grafted tree will be true-to-name — and a true-to-name tree bears true-to-name fruit.
Most of Stark Bro’s trees are either propagated through grafting — by joining a scion and rootstock together — or through budding. Budding involves placing a single vegetative bud into the side of the rootstock and wrapping it with cellophane tape until it heals together. The results of grafting and budding are the same: a true-to-name tree.
A grafted tree is consistent and has a reliable history of characteristics. It has a track record:
See the consistency in size and shape of these grafted fruit trees?
With this in mind, I will always recommend you plant trees that were propagated through grafting or budding methods. It’s worth the investment to know exactly what you’re getting!