Apple

Gravenstein Pollination Guide

Gravenstein is a triploid variety — it needs two other non-triploid varieties nearby to produce fruit.

Triploid — Needs Two Pollinators Group 2

Gravenstein has three sets of chromosomes, which makes its pollen sterile. It can't pollinate other trees, and it can't pollinate itself. You need two other non-triploid varieties nearby: one to pollinate Gravenstein, and a second to pollinate the first (since Gravenstein can't return the favor). This means a minimum of three trees in your orchard.

Gravenstein Quick Facts

Chill Hours

700 hours

Hardiness Zones

4, 5, 6, 7, 8

Harvest

August

Bloom Time

early to early-mid season

Pollination Note

Triploid — produces sterile pollen, needs two other non-triploid varieties nearby

Planning Your Orchard

Since Gravenstein is triploid, plan for at least three apple trees total. Choose two non-triploid varieties from the same or adjacent pollination groups. Good universal pollinators include Golden Delicious (partially self-fertile, group 4) and any crabapple with overlapping bloom time. Space trees 15–25 feet apart for standard rootstock, or 8–12 feet for dwarf.

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About Gravenstein

Gravenstein is the heirloom apple that Sonoma County built its reputation on — intensely aromatic with a perfect sweet-tart balance that makes the best applesauce and pies. It's a triploid that produces no viable pollen.

Growing Challenges

Triploid — needs two other apple varieties for pollination; biennial bearing; bruises easily.

Frequently Asked Questions

What is the best pollinator for Gravenstein?

The best pollinators for Gravenstein are varieties in pollination group 2 or adjacent groups that bloom at the same time. Top choices include Arkansas Black, Braeburn, Cortland. Golden Delicious is also an excellent universal pollinator for most apple varieties.

Can a crabapple pollinate Gravenstein?

Yes, crabapples are excellent pollinators for Gravenstein as long as their bloom times overlap. Ornamental crabapples produce abundant pollen and are a great option if you want a pollinator that also adds spring beauty to your landscape.

Why does Gravenstein need two pollinators instead of one?

Gravenstein is a triploid variety with sterile pollen — it can receive pollen but can't donate it. You need two other non-triploid apple varieties: one to pollinate Gravenstein, and one to pollinate the first pollinator (since Gravenstein can't do it). All three trees should be from the same or adjacent pollination groups.

How close does a pollinator need to be to Gravenstein?

For reliable pollination, plant the partner variety within 50–100 feet of Gravenstein. Bees are the primary pollinators and typically work within this range. In practice, a tree in your yard or even a neighbor's nearby tree can work. The closer the trees, the more consistent the fruit set.

Can I grow just one Gravenstein tree?

No — Gravenstein requires a compatible pollination partner to produce fruit. Without a second tree of a different variety nearby, it will bloom but won't set fruit. As a triploid, it actually needs two other varieties.

Other Apple Varieties

Related Tools

Pollination data compiled from university extension services, the Royal Horticultural Society (RHS) pollination group charts, RosBREED cherry S-allele research, and nursery compatibility guides. Pollination compatibility can vary by region and microclimate. For best results, consult your local extension office.