Most people plant whatever mulberry sapling is available at the local nursery without realizing that variety selection is one of the highest-leverage decisions in the whole process. In my work advising home orchardists, I’ve seen the same planting mistakes repeated — and the frustration that comes years later when a tree underperforms because of a choice made on day one. That frustration compounds when the goal is something specific, like harvesting fruit suitable for making tea: the wrong variety, planted in the wrong microclimate, will give you berries that are watery, low in the antioxidant compounds that make mulberry tea worth drinking, and so perishable that a viable harvest window barely exists. Over the past several years, I’ve run informal variety trials at my demonstration orchard and pulled together what the extension literature actually says about Morus alba, Morus rubra, and their hybrids in the context of food-grade use — so what follows isn’t assembled from generic gardening sites, but from direct observation and hands-on advising. If you want to grow mulberries with tea production in mind, this guide will help you make the right call from the start, not three years too late.
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What I found wasn’t a simple yes or no. It was more complicated and more interesting than that — and I think if you’re pregnant, or if someone you love is, you deserve the full picture rather than a breezy dismissal or an unnecessary panic spiral. So let’s dig in together.
What the Research Actually Says About Mulberry Tea Pregnancy Safety
Here’s where I have to be honest with you: the research on herbal teas during pregnancy is frustratingly thin across the board, and mulberry leaf is no exception. The National Center for Complementary and Integrative Health (NCCIH) — one of the most trustworthy sources I found — states plainly that there is insufficient data on the safety of white mulberry leaf during pregnancy and breastfeeding, and they recommend caution. That’s not a condemnation. That’s a research gap. But it matters.
WebMD echoes this. They rate white mulberry as possibly safe for general use in healthy adults, but they specifically advise avoiding it during pregnancy — again, not because something bad has been documented, but because the safety data simply doesn’t exist yet. That distinction is actually important. “We don’t know” is not the same as “it’s dangerous.” But during pregnancy, “we don’t know” carries a lot more weight than it does in everyday life.
The thing I kept coming back to is this: mulberry leaf has been used as a food and culinary ingredient across Asia for centuries. Small amounts used in traditional cooking have a long, quiet history without any widely reported harm. But — and this is a meaningful but — drinking concentrated mulberry leaf tea daily, especially the kind sold as a health supplement, is a very different situation than using a few dried leaves to flavor a dish. Concentration and dosage change the conversation entirely.
The Blood Sugar Factor Is Worth Taking Seriously
One of the most compelling reasons I found to urge caution came down to blood glucose. Mulberry leaf is genuinely well-studied for its ability to lower blood sugar levels — that’s actually one of the reasons people love it and one of the reasons I think it’s such a fascinating plant. Compounds in the leaf, particularly 1-deoxynojirimycin (DNJ), slow the absorption of sugars in the gut.
In pregnancy, blood sugar management is incredibly delicate. The body is already doing complex hormonal work to fuel both the pregnant person and the growing baby, and healthcare providers monitor glucose carefully, especially for gestational diabetes. Adding a tea that actively influences blood sugar — even in a potentially beneficial direction — without medical supervision introduces a variable that most OBs and midwives would want to know about. It’s not that the effect is necessarily harmful. It’s that it’s an effect, and it’s one that could interact with a system that’s already being closely managed.
I wish I had understood this angle sooner. It made everything click into place for me.
The Honest Bottom Line (Not Alarmist, Just Real)
So where does all of this leave us? Here’s what I told my sister-in-law, and what I’d tell any pregnant person who loves mulberry tea as much as I do:
- A single cup of lightly brewed mulberry leaf tea is unlikely to cause a catastrophe, and there is no documented evidence of harm from traditional culinary use.
- Concentrated, high-dose, or daily supplemental use of mulberry leaf tea is a different story — that’s where the caution flags genuinely apply.
- The lack of safety data is real and significant. Absence of evidence is not evidence of absence, but in pregnancy, the standard is — and should be — higher.
- The blood glucose-lowering effects of mulberry leaf are documented and meaningful, and those effects deserve a conversation with your provider.
- Your OB, midwife, or a licensed herbalist with prenatal experience is the right person to make the final call for your specific situation.
My sister-in-law, for what it’s worth, decided to take a break from her daily mulberry tea habit through her first trimester and asked her midwife about it at her next appointment. Her midwife appreciated that she asked, confirmed the caution recommendation, and suggested she revisit after delivery. That felt like exactly the right call to me.
What I Use and Recommend (For When the Time Is Right)
Okay, so this section is for everyone who is NOT currently pregnant — or for those of you bookmarking this for after delivery, because mulberry tea really is wonderful and I want you to enjoy it fully when the time is right. These are the products I personally keep coming back to and feel great recommending to fellow mulberry enthusiasts.
Bravo Tea Absolute White Mulberry Leaf Tea Bags
Bravo Tea Absolute White Mulberry Leaf Tea Bags are my everyday go-to. The flavor is clean and mild with just a gentle earthiness, and I love that Bravo is transparent about their sourcing. Great for someone just getting into mulberry leaf tea.
Bio Nutrition White Mulberry Tea 30 Bags
If you’re interested in the wellness side of mulberry leaf, Bio Nutrition White Mulberry Tea is a solid choice with a good reputation. The 30-bag count makes it easy to work into your routine without committing to a giant supply upfront.
Malwa White Mulberry Herbal Tea Bags
Malwa White Mulberry Herbal Tea Bags have a slightly more robust flavor profile and are wonderful with a little honey on a cool evening. I’ve gifted these to friends who are new to herbal teas and they always come back asking where to get more.
FullChea USDA Organic White Mulberry Tea
For those of you who care about organic certification — and honestly, I think that’s a smart priority — FullChea USDA Organic White Mulberry Tea is the one I reach for. The USDA organic label means something, and FullChea’s quality is consistently lovely.
My Recommendation and a Gentle Nudge Forward
If you’re researching mulberry tea pregnancy safety right now, here is the warmest, most honest thing I can say to you: the caution is real and worth respecting, and asking the question in the first place means you’re already doing this right. Talk to your provider, be specific about how much you’ve been drinking and how it’s prepared, and let them weigh in with full information. Most of them will appreciate that you came to them with a thoughtful question rather than just assuming everything herbal is automatically safe.
Mulberry tea will absolutely be here waiting for you when the time is right. And if you want to explore all the other wonderful, pregnancy-safe ways to connect with mulberries in the meantime — the fresh fruit, mulberry jam, even just learning about growing your own tree — I have so much more to share with you here on the blog. You’ve got a whole magnificent mulberry world ahead of you. I’m so glad you’re here.