Poncirus Plus

Poncirus Plus is grown as an improved form of trifoliate orange, with growers reporting less sticky, resinous character in its fruit. Reports include seed-grown and grafted plants, so they should not be assumed to describe one verified clone. A European origin is reported, but the original selector and accession history remain unverified.^{⁠[7]⁠[10]⁠[5]}

In The Mulberries’ comparative taste test, a ripe fruit from seed-grown material supplied by Mel in Pennsylvania was very sour, with little perceived sweetness and low flesh/juice bitterness; the zest remained bitter. The presenter reported about 67 g and 13.5 Brix and preferred it for processing rather than fresh eating. The companion scorecard lists pH 2.9 and 12 Brix; that Brix value differs from the video reading. These values and impressions describe that sample, not a cultivar-wide standard.^{⁠[7]⁠[11]}

Growers have reported repeat or summer-flush flowering on some plants, while others had not yet flowered. One forum report describes Poncirus+ seedlings fruiting at three to four years, without accession details, sample counts, or growing conditions; this is not a guaranteed bearing age.^{⁠[8]⁠[10]⁠[5]⁠[6]}

One grower reported leaf loss but no other damage and emerging buds after an unprotected trial at about −13.9 °C (7 °F), with Poncirus Plus grafted onto trifoliate orange. This individual report does not establish a universal survival limit.^⁠[2]