Question 1

Which plants actually help pollinators?

Accepted Answer

The label "pollinator friendly" is applied loosely, and several popular choices do very little. What matters is **accessibility, nectar and pollen content, and season**.

**What makes a flower genuinely useful:**

**Open, accessible structure.** Nectar must be reachable. **Double-flowered cultivars are frequently useless** — the extra petals are modified stamens, so the flower has little or no pollen and the nectar is often unreachable. A double begonia or a pompom dahlia may be visited by nothing. **Single, open flowers** of the same species can be excellent.

**Matching mouthparts.** Different pollinators need different shapes. Short-tongued bees and hoverflies need open, flat flowers — umbellifers, daisies, sedum. Long-tongued bumblebees can reach tubular flowers — foxglove, comfrey, honeysuckle. A garden with only one flower shape serves only some species.

**Season coverage, which is the most overlooked factor.** Most gardens peak in June and July, when forage is abundant anyway. **The genuinely valuable periods are early spring and late autumn**, when queens emerge and when insects prepare to overwinter. Crocus, willow, pulmonaria, hellebore, mahonia and winter heather at one end; ivy, sedum, michaelmas daisy and single dahlias at the other.

**Ivy in particular** flowers in autumn when almost nothing else does, and is one of the most valuable plants available.

**Planting in drifts** rather than singly, since insects forage more efficiently on concentrated patches.

**Native versus non-native.** Research, including the RHS Plants for Bugs study, found that **native and near-native planting supported the most invertebrates overall**, but that non-natives extended the season and added value — so a mix is better than either alone.

**What matters beyond flowers:** nesting and overwintering habitat — bare soil for mining bees, hollow stems left standing, log piles, and long grass. **Not tidying up in autumn** is one of the most effective single actions.

**Avoid pesticides**, particularly on anything in flower.

Question 2

How does pollination actually work?

Accepted Answer

Pollen has to physically reach the stigma of a compatible flower, germinate, and grow a tube down to the ovule — and almost everything about how a flower looks and smells is an adaptation to getting

Question 3

What is a pollination group, and do I need two fruit trees?

Accepted Answer

A grouping indicating when a variety flowers, used to work out which fruit trees can pollinate each other — and for many fruits the answer is yes, you need a compatible partner, though not always one

Question 4

Why is my fruit tree not producing fruit?

Accepted Answer

Most commonly pollination, and the usual culprit is a factor most people do not know applies. Pollination groups. Many fruit trees — particularly apples, pears, plums and cherries — are not

Question 5

Do bug hotels actually work?

Accepted Answer

Some designs do and many do not — the elaborate multi-compartment structures sold in garden centres are largely decorative, while a few simple features genuinely support insects. What works, and why:

Question 6

Why is my courgette plant flowering but not producing fruit?

Accepted Answer

Usually pollination, and often simply timing. Courgettes, along with cucumbers, pumpkins and squash, carry separate male and female flowers on the same plant, and both need to be open at once for

Question 7

Why do plants flower when they do?

Accepted Answer

Mostly because of day length, which is the only environmental signal reliable enough to time a life cycle by — temperature varies wildly from year to year, but the length of the night on a given date

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