Taxon ID:
Usage Facet: class=edible; edible_score=1.0; ornamental_score=0.0; inferred_from_taxon=no
Relationships: 0 | Linked Entities (visible): 0 | Evidence claims: 12 | History events: 0 | Catalog issue offerings: 0
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Evidence Badge: emerging | claims=12 | sources=1 | contradictions=0
Claim Types: description_snippet:2, recommendation_context:2, caption_context:1, flavor_profile:1, fruit_color:1, fruit_size:1, growth_habit:1, source_reference_abbreviation:1, taxon_context:1 | Open evidence summary JSON | Open citation drawer JSON
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Alfred Blackberry is a Rubus fruit sold as a northern blackberry in a 1937 Fruit Growers Service Co. catalog. The catalog calls it a rising variety, saying Alfred was "rapidly becoming popular" and identifying it as the "coreless blackberry." [S1]
The fruit is described as large, jet black, sweet, and juicy. Berries were said to often reach 1 1/2 inches long, making Alfred a large blackberry in this catalog. [S1]
Alfred was promoted as a strong, vigorous grower. The catalog says it ripens about a week to ten days before Eldorado and is more productive. [S1]
The hardiness claim is direct. Alfred was reported to have stood 30 degrees below zero without injury when other varieties were killed to the ground. The same source still recommends winter protection for best results in the North, so it presents Alfred as hardy but still needing winter care. [S1]
The available source gives no parentage, breeder, release date, or formal taxonomic placement beyond blackberry. Alfred appears as a commercial nursery offering for northern planting, large fruit, productivity, earliness, and winter survival. [S1]
Summary source basis
This summary currently draws chiefly from Hardy fruits for Northern planting, trees, shrubs, 1937.
Direct parent cultivars
Parentage claim text
Derived or downstream cultivar links
Source-story quotations
Taxonomy context: No family-tree context surfaced yet.
Related cultivars mentioned in source context
Zone assertions are structured rows. Hardiness claim text appears in evidence claims and page-linked citations.
| Zone Min | Zone Max | Zone Text | Assertion Type | Outcome | Location | Confidence |
|---|---|---|---|---|---|---|
| No explicit zone assertion rows yet. | ||||||
No linked media assets.
| Document | Title/URL | Rights | Claims | Relationships | History Events | Pages | Snippets |
|---|---|---|---|---|---|---|---|
| 105 | Hardy fruits for Northern planting, trees, shrubs, 1937 | unknown | 12 | 0 | 0 | p13 | A photo on the page is captioned Alfred Blackberry.; Prices for Alfred are referenced on page 8.; Alfred is described as about a week to ten days earlier than Eldorado and more productive.; For best results in the North, |
| Document | Page | Claim Type | Claim | Quote | Match |
|---|---|---|---|---|---|
| 105 | p13 | caption_context | Aphoto on the page is captioned Alfred Blackberry. | Alfred Blackberry Alfred is rapidly becoming popular. | page_block:0.90 |
| 105 | p13 | source_reference_abbreviation | Prices for Alfred are referenced on page 8. | Alfred Blackberry Alfred is rapidly becoming popular. | page_block:0.90 |
| 105 | p13 | recommendation_context | Alfred is described as about a week to ten days earlier than Eldorado and more productive. | Alfred Blackberry Alfred is rapidly becoming popular. | page_block:0.90 |
| 105 | p13 | recommendation_context | For best results in the North, the catalog recommends winter protection. | Alfred Blackberry Alfred is rapidly becoming popular. | page_block:0.90 |
| 105 | p13 | entry_hardiness_observation | It is said to have stood 30 degrees below zero without injury when other varieties were killed to the ground. | Alfred Blackberry Alfred is rapidly becoming popular. | page_block:0.90 |
| 105 | p13 | growth_habit | Alfred is described as a strong vigorous grower. | Alfred Blackberry Alfred is rapidly becoming popular. | page_block:0.90 |
| 105 | p13 | description_snippet | Alfred is called the coreless blackberry. | Alfred Blackberry Alfred is rapidly becoming popular. | page_block:0.90 |
| 105 | p13 | fruit_size | The berries are said to be often 1 1/2 inches long. | Alfred Blackberry Alfred is rapidly becoming popular. | page_block:0.90 |
| 105 | p13 | flavor_profile | The berries are described as sweet and juicy. | Alfred Blackberry Alfred is rapidly becoming popular. | page_block:0.90 |
| 105 | p13 | fruit_color | The berries are described as large and jet black. | Alfred Blackberry Alfred is rapidly becoming popular. | page_block:0.90 |
| 105 | p13 | description_snippet | Alfred is described as rapidly becoming popular. | Alfred Blackberry Alfred is rapidly becoming popular. | page_block:0.90 |
| 105 | p13 | taxon_context | Alfred is presented as a blackberry. | Alfred Blackberry Alfred is rapidly becoming popular. | page_block:0.90 |
| Year | Nursery | Catalog Issue | Relation |
|---|---|---|---|
| No catalog issue offerings linked. | |||
| Relation | Type | ID | Label |
|---|---|---|---|
| No linked entities at this filter level. | |||
| Type | Claim | Confidence |
|---|---|---|
| caption_context | A photo on the page is captioned Alfred Blackberry. | 0.97 |
| source_reference_abbreviation | Prices for Alfred are referenced on page 8. | 0.86 |
| recommendation_context | Alfred is described as about a week to ten days earlier than Eldorado and more productive. | 0.94 |
| recommendation_context | For best results in the North, the catalog recommends winter protection. | 0.97 |
| entry_hardiness_observation | It is said to have stood 30 degrees below zero without injury when other varieties were killed to the ground. | 0.95 |
| growth_habit | Alfred is described as a strong vigorous grower. | 0.95 |
| description_snippet | Alfred is called the coreless blackberry. | 0.95 |
| fruit_size | The berries are said to be often 1 1/2 inches long. | 0.95 |
| flavor_profile | The berries are described as sweet and juicy. | 0.96 |
| fruit_color | The berries are described as large and jet black. | 0.97 |
| description_snippet | Alfred is described as rapidly becoming popular. | 0.90 |
| taxon_context | Alfred is presented as a blackberry. | 0.98 |
| ID | Type | Year | Label |
|---|---|---|---|
| No history events. | |||