> My experience is mostly with parafilm grafting tape; when fresh, it works great. When aged, it loses its stretchiness and its self adhesion, making it hard to work with. I was given some old Parafilm M one time, and it was like old parafilm grafting tape--a bitch to work with, and not very effective. With either one, I wrap the join first with a grafting rubber for strength, then the tape. Although I may wrap the entire scion except the join section with the parafilm before joining them, since it's easier to do before there is a tender joint to protect. My two cents.Muffy Barrett
>
> ---------- Original Message ----------
>
> Sherwin,
> Parafilm M is used in laboratory applications to diminish moisture loss; it
> does have some gas permeability...however, I'm unaware of it ever being
> used in a medical setting as a wound dressing...and I am a scientist and
> medical professional(BS in Microbiology, DVM, residency in Pathology).
>
> Are there other grafting tapes that work as well? Perhaps.
> In my experience, as others have attested, apples & pears probably require
> little, but wrapping the union and scion, in its entirety, is a great boon
> for slow-callusing species like pecan, persimmon, oak, etc., which,
> additionally, are often grafted later in the season, when temperatures and
> sunlight levels are more likely to cause desiccation of the scion.
> Parafilm is certainly less troublesome than having to maintain a pot of
> melted grafting wax, particularly when grafting in the field, and less
> messy than a wax toilet ring.
> Buds will push right through well-stretched Parafilm M (it stretches to
> 200% of its original length), and there's no need to cut or remove anything
> later in the season.
>
> But...again, Parafilm M has virtually NO structural strength...graft unions
> must be bound/supported with something...be it masking tape, rubber bands,
> electrical tape or other grafting/budding tape...some of which may require
> cutting or removal to prevent subsequent girdling.
>
> My minimal experience with the Parafilm Grafting Tape product was that it
> did not stretch as thinly, nor did it self-adhere, as does Parafilm M. I
> just did not like it, and saw no reason to switch away from what I'd
> learned to use from the outset of my experience as a grafter.
>
> Lucky Pittman
>
>
>
> On Thu, Apr 23, 2020, 11:04 PM sherwin <sherwindu@att.net> wrote:
>
>> On 4/22/2020 4:44 AM, Alan Haigh wrote:
>>> As mentioned, the use of parafilm is to hold in moisture, I doubt it lets
>>> any oxygen in. I use electric tape to hold my splice grafts together and
>>> then wrap my scion with the parafilm. Pears and apples don't really need
>> it
>>> and a dab of some kind of sealant at the tip is generally adequate.
>>>
>>> Vinyl electric tape can eventually girdle apple grafts but peach growth
>> is
>>> strong enough to force it to stretch. A longitudinal cut with a razor
>> knife
>>> after the tissue is merged and strong is sometimes needed, but if you
>>> unwrap it when the bark isn't slipping you can usually get away with that
>>> without peeling off any bark. Alternatively, you can use rubber electric
>>> tape which stretches much more than vinyl.
>>>
>>> Where the parafilm seems useful and even necessary is with stonefruit,
>>> persimmon and paw paw grafts.
>>>
>>> I exclusively use splice grafts because they are the quickest and require
>>> the least skill, especially if you use a double bladed Italian pruning
>>> shear to cut the scion and annual shoot (or 2nd year) you are grafting
>>> together. If you match diameters any idiot can do it without ever cutting
>>> their fingers. The trick is to make long diagonal cuts of scion and
>> mother
>>> wood as close to the same as you can. This creates a lot of matching
>>> cambium.
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>> Alan,
>>
>> There are many kinds of grafting tapes that can retain the moisture
>> of a graft union. People have been known to use masking tape and other
>> such products that should moisture seal the graft. Parafilm will also
>> breath as it does in its usage in the medical world where wounds do
>> better with exposure to air. Question is, does the Parafilm have any
>> advantage over other grafting tapes because it allows air to reach the
>> graft union?
>>
>> Sherwin
>>
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Muffy,
I don't understand the need of wrapping the entire scion with tape.
I would think just wrapping the graft union and applying some kind of
sealer to the tip would do the job.
Sherwin
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